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Watlow Controls Series 998, User Manual

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Wiring Example

Installation and Wiring, Chapter 2

2.6

WATLOW Series 998 User’s Manual

Figure 2.6 - 
System Wiring
Examples.

➥

Series 146
Limit Control
146E-1601-3000

High-
Temperature
Light 

High-Limit 
Mechanical
Control

 

Fuse

Mercury

Relay

Humidify

Dehumidify

Earthground

Fuse

L1

L2
L1
L2

12
13
14
15
16
17
18
19
20

8
9

10

21  22      11

Coil

1

2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17

C NO NC

Reset

L2

L2

L1

L2

L1

L2

Heater

Cooling
Fan

Wet Bulb

RTD Sensor

Dry Temp

RTD Sensor

Limit Sensor

Environmental

Chamber

ç

WARNING:
To avoid potential
electric shock, use
National Electric
Code (NEC) safety
practices when
wiring and connect-
ing this unit to a
power source and
to electrical sensors
or peripheral
devices. Failure to
do so could result
in injury or death.

ç

CAUTION:
To avoid damage to
property and equip-
ment, use  National
Electric Code (NEC)
standard wiring
practices to install
and operate the
series 998. Failure
to do so could
result in such dam-
age.

Summary of Contents for Series 998

Page 1: ...ser s Manual Watlow Controls 1241 Bundy Boulevard P O Box 5580 Winona Minnesota USA 55987 5580 Phone 507 454 5300 Fax 507 452 4507 http www watlow com User Levels New User go to Introduction Experienc...

Page 2: ...tecting you others and equipment from damage Pay very close attention to all warnings that apply to your application The safety alert symbol an exclamation point in a triangle precedes a general CAUTI...

Page 3: ...3 Keys and Displays 3 1 Keys and Displays 3 2 Display Key and Loop Chapter 4 The Setup Menus 4 1 Navigating the Setup Menus 4 2 Input Menu 4 16 Output Menu 4 32 Global Menu Chapter 5 The Operation Men...

Page 4: ...Notes Table of Contents WATLOW Series 998 User s Manual...

Page 5: ...ion can be used to configure and monitor the controller with a personal computer from a remote location If you are unfamiliar with general controller operation it s a good idea to read through the ent...

Page 6: ...A4HI AUt PiDb OPEr Pb1b rE1b It1b RA1b dE1b Ct1b Pb2b rE2b It2b rA2b dE2b Ct2b db b PID A Menu Operation Menus Output 1 Proportional Band A Output 1 Reset A Output 1 Integral A Output 1 Rate A Output...

Page 7: ...Input 2 Linearization Altitude Global Menu Setup Menus Celsius Fahrenheit Failure Mode Error Latching Event Input 1 Annunciator Auto tune Set Point Ramping Channel A Ramp Rate Channel A Ramping Chann...

Page 8: ...iv WATLOW Series 998 User s Manual Notes Introduction...

Page 9: ...om the case by pressing firmly on the two release tabs on one side or the top of the bezel until they unsnap Then firmly press the two release tabs on the opposite side or the bottom of the control un...

Page 10: ...V O N 1 2 3 O N 1 2 3 O N 1 2 3 O N 1 2 3 O N 1 2 3 O N 1 2 3 O N 1 2 3 O N 1 2 3 Controller Chassis Rear View Input 1 DIP Channel A DIP Input 2 DIP Channel B DIP ON ON 1 Set the input DIP switches to...

Page 11: ...5 30mA O N 1 2 O N 1 2 O N 1 2 O N 1 2 O N 1 2 O N 1 2 2 Set DIP switches for outputs equipped with an external signal conditioner power supply Only controllers with model number 99__ ____ T___ or 99...

Page 12: ...switch hides the Setup Menus Input Output Global and Communications and the Factory Menus Panel Lockout Diagnostics and Calibration All units have a lockout DIP switch All controllers leave the factor...

Page 13: ...um Panel Thickness 0 38 9 65mm 3 62 0 03 0 00 92mm 0 8 1 77 0 02 0 00 45mm 0 6 Panel Adjustable Mounting Bracket 4 06 103 mm 0 68 17 mm NOTE A minimum of 1 66 42 2mm spacing between panel cutouts is r...

Page 14: ...side or the bottom Pull the chassis out of the case by gently rocking it 3 Slide the case into the panel cutout Check to see that the gasket is not twisted and is seated within the case bezel flush wi...

Page 15: ...ase is seated properly Tighten the installation screws firmly against the mounting collar to secure the unit To ensure a NEMA 4X seal there should be no space between the bezel and panel Overtightenin...

Page 16: ...is problem replace at least one of the grounded thermocouples with an ungrounded thermocouple If the appli cation requires grounded thermocouples use an isolated transmitter such as a Watlow Gordon 57...

Page 17: ...Rx range 100 to 400 ohms for the external resistor is recommended We suggest starting with 250 ohms Example Customer is using a 24V dc power supply to power up the 4 20mA dc transmitter that inputs to...

Page 18: ...6 17 C NO NC Reset L2 L2 L1 L2 L1 L2 Heater Cooling Fan Wet Bulb RTD Sensor Dry Temp RTD Sensor Limit Sensor Environmental Chamber WARNING To avoid potential electric shock use National Electric Code...

Page 19: ...and equip ment and or injury or loss of life use National Electric Code NEC stan dard wiring prac tices to install and operate the Series 998 Failure to do so could result in such damage and or injury...

Page 20: ...W Series 998 User s Manual NOTE Model number 99_ _ 1 _ _ _ _ _ _ _ has no input 1 DIP switch Jumper 9 to 10 for 2 wire RTD 9 10 9 10 8 S2 S1 S3 9 10 8 S2 S1 10 9 V DC 10 8 mA NOTE Using a grounded the...

Page 21: ...7 NOTE Model number 99_ _ _ 1 _ _ _ _ _ _ has no In1 DIP switch 19 20 19 20 18 S2 S1 Jumper 19 to 20 for 2 wire RTD 19 20 18 S2 S1 S3 20 18 mA 20 19 V DC NOTE Using a grounded thermocouple for both i...

Page 22: ...ppression Dual Form A 0 5 Amps Off state impedance 31M 99 _ _ _ _ K _ _ _ _ _ Figure 2 10b Dual Switched DC 99 _ _ _ _ C _ _ _ _ _ Figure 2 10c 0 20mA and 4 20mA Process Load impedance 800 max 99 _ _...

Page 23: ...0 5 Amps Off state impedance 31M 99 _ _ _ _ _ K _ _ _ _ Figure 2 11b Dual Switched DC 99 _ _ _ _ _ C _ _ _ _ Figure 2 11c 0 20mA and 4 20mA Process Load impedance 800 max 99 _ _ _ _ _ F _ _ _ _ Figure...

Page 24: ..._ 0 5V 1 5V or 0 10V dc Load impedance 500 min 99 _ _ _ _ _ _ N _ _ _ Figure 2 12d External Transmitter Power Supply 99 _ _ _ _ _ _ T _ _ _ See Chapter 1 for DIP switch location and set tings Form B...

Page 25: ...on and settings For data communications wiring refer to How to Use Data Communications with the Watlow Series 988 Family Controls NOTE Input to output iso lation is defeated when the external transmit...

Page 26: ...Notes Installation and Wiring Chapter 2 2 14 WATLOW Series 998 User s Manual...

Page 27: ...nter the Setup Menu Continue to press both keys for another three seconds to enter the Factory Menu WATLOW Series 998 User s Manual 3 1 Keys and Displays Chapter 3 Figure 3 1 Series 998 Keys and Displ...

Page 28: ...auto mode 100 to 100 in manual mode heat cool 0 to 100 in manual mode heat only 100 to 0 in manual mode cool only Default depends on input 1 range and type Channel B Process and Set Point The channel...

Page 29: ...pts appear After stepping through each menu the Series 998 returns to the Setup Menu prompt Use the Up arrow or Down arrow key to select the next menu or use the Mode key to advance through the same m...

Page 30: ...ion Reaching the Input Menu InPt Input Menu SEt Setup Menus In1 Input 1 page 4 5 dEC1 Decimal 1 rL1 Range Low 1 rH1 Range High 1 CAL1 Calibration Offset 1 rtd1 RTD Calibration Curve 1 Ftr1 Input 1 Sof...

Page 31: ...b dry bulb configuration the Input 2 Linearization prompt Lin2 must be set to Wb The humidify and dehumidify outputs outputs 1B and 2B are disabled when the channel A temperature falls below 32 F 0 C...

Page 32: ...when the channel A temperature falls below 5 F 20 C or goes above 320 F 160 C The relative humidity process display in the Display Loop will display the error code E2 2 for a low temperature error and...

Page 33: ...pt in the Calibration Menu If you change the value the default warning dFLt will flash in the upper display Changes do not take effect automatically after five seconds you must press the Mode key to e...

Page 34: ...on for process type channel A data This prompt in conjunction with the Range Low and Range High prompts allows you to format and limit units of measure for channel A All prompts with units of measure...

Page 35: ...t Range low is the value displayed when the minimum process signal is present at the input Example Set In1 to 4 20 mA Set rL1 to 100 Set rH1 to 500 A 4mA input will display 100 A 12mA input will displ...

Page 36: ...7 3 53 7 4 20 999 999 units 0 20 999 999 units 0 5 999 999 units 1 5 999 999 units 0 10 999 999 units Calibration Offset 1 Offset the channel A signal by a positive or negative value This allows you...

Page 37: ...pt appears only if you have set In1 to rtd or r d Default din JIS rtd1 rtd1 Software Filter 1 Select the filter time constant in seconds for channel A This smooths a rapidly changing input signal for...

Page 38: ...y to enter the sensor type change and advance to the next prompt In2 This prompt always appears If Default 99__ _1__ ____ no DIP J K T N E W5 W3 Pt2 no J H t n E C d Pt2 no thermocouple In2 In2 In2 In...

Page 39: ...default values are the same as the limits of the sensor you selected by setting the input 2 DIP switch and selecting a value for Input 2 In2 Process inputs are scaled by these values Range high is th...

Page 40: ...00 E 328 1470 200 799 W5 C 32 4200 0 2316 W3 d 32 4200 0 2316 Pt2 32 2543 0 1395 r 32 3200 0 1760 99__ 2__ ___ only in2 S 32 3200 0 1760 b 32 3300 0 1816 rtd 328 1472 200 800 r d 9 9 99 9 7 3 53 7 4 2...

Page 41: ...F r d 9 9 0 9 9 C_F In2 CAL2 CAL2 CAL2 Global Menu Input Menu C 555 0 555 C_F CAL2 CAL2 CAL2 Global Menu C r d 5 5 0 5 5 C_F In2 CAL2 CAL2 CAL2 Global Menu Input Menu 999 0 999 units a process input C...

Page 42: ...Linearization 2 Set the type of relative humidity sensor being used Select 30C to provide temperature compensation when using the Vaisala HMM 30C humidity sensor Select H260 to provide temperature com...

Page 43: ...WATLOW Series 998 User s Manual 4 15 Setup Menus Chapter 4 Notes...

Page 44: ...SEt PrA AL3 dEb AL3 Prb AL3 dEA AL3 Input Output Global Communications Menu Menu Menu Menu p 4 2 p 4 16 p 4 32 p 4 38 Press the Up arrow key or the Down arrow key to select one of the prompt values O...

Page 45: ...alue in the upper display The new value will not take effect until after a five second delay or until you press the Mode key Output 1A Set the way that output 1A will respond to a difference between t...

Page 46: ...needed to turn the output from full on to full off HY1A This prompt does not appear if output 1 is a process output If Default F 1 3 999 C_F HY1A HY1A HY1A Global Menu F r d 1 0 9 9 C_F In2 HY1A HY1A...

Page 47: ...that output 2A responds when the input signal is less than the set point This prompt only appears if Ot1A is set to CL CL select direct action so that output 2A responds when the input signal is more...

Page 48: ...ault F 1 3 999 C_F HY2A HY2A HY2A Global Menu F r d 1 0 9 9 C_F In1 HY2A HY2A HY2A Global Menu Input Menu C 1 2 555 C_F HY2A HY2A HY2A Global Menu C r d 1 0 5 5 C_F In1 HY2A HY2A HY2A Global Menu Inpu...

Page 49: ...t Ot1b This prompt always appears Default H t CL no Ot1b Ot1b Ot1b Hysteresis 1B Select the switching hysteresis for output 1B This determines the change in temperature or process units needed to turn...

Page 50: ...annel B output is something other than a process output 99__ ___F ____ Default Ht CL no Ot2b Ot2b Ot2b Hysteresis 2B Select the switching hysteresis for output 2B This determines the change in tempera...

Page 51: ...10V dc 4 20 0 20 0 5 1 5 0 10 Prcb Prcb Prcb Prcb Prcb Output 3 Set the alarm type for output 3 AL3 to de energize output during alarm condition AL3n to energize output during alarm condition Ot3 Thi...

Page 52: ...A Changing the set point does not change the alarm response dEA uses a deviation from the channel A signal Changing the set point changes the alarm response AL3 This prompt appears only on controller...

Page 53: ...is affected as listed below HYS3 This prompt appears only on controllers equipped with output 3 hardware not 99__ ____ A___ and with Ot3 Output Menu set to AL3 or AL3n If Default F 1 3 999 C_F HYS3 H...

Page 54: ...or 99__ ____ C___ or 99__ ____ K___ or 99__ ____ J___ and with Ot3 Output Menu set to AL3 or AL3n Default nLA LAt LAt3 LAt3 Silencing 3 Select silencing to inhibit alarm 3 on startup and to allow the...

Page 55: ...hardware for a relay 99__ ____ _B__ or 99__ ____ _D__ or 99__ ____ _E__ or 99__ ____ __K__ or switched dc 99__ ____ _C__ Default AL4 AL4n no Ot4 Ot4 Ot4 Alarm 4 Select the alarm channel and type for a...

Page 56: ...Ot4 set to AL4 or AL4n If Default F 1 3 999 C_F HYS4 HYS4 HYS4 Global Menu F r d 1 0 9 9 C_F In1 HYS4 HYS4 HYS4 Global Menu Input Menu C 1 2 555 C_F HYS4 HYS4 HYS4 Global Menu C r d 1 0 5 5 C_F In1 HY...

Page 57: ...h Ot4 set to AL4 or AL4n Default OFF On SIL4 SIL4 Analog Output Select which value to retransmit as the output 3 signal PrcA retransmits the channel A input value SP A retransmits the set point for ch...

Page 58: ...20mA 0 5V 1 5V 0 10V dc 4 20 0 20 0 5 1 5 0 10 Prc3 Prc3 Prc3 Prc3 Prc3 Retransmit Low Limit Select the low limit for the retransmit signal at output 3 The default value is equal to rL1 or rL2 in the...

Page 59: ...quipped with retransmit hardware 99__ ____ M___ or 99__ ____ N___ and with Aout not set to no ArL 9999 ArH ArH Retransmit Calibration Offset Select an offset value for the retransmit signal at output...

Page 60: ...the Setup menus Reaching the Global Menu Figure 4 32 The Global Menu Prompts may not appear depending on controller configuration gLbL Global Menu SEt Setup Menus C_F Celsius Fahrenheit page 4 33 FAI...

Page 61: ...ntil you press the Mode key Celsius Fahrenheit Select which temperature scale the controller will use C_F This prompt appears only on controllers with In1 and In2 set to something other than a process...

Page 62: ...ing errors must be turned off manually Err This prompt always appears Default nLA LAt Err Err Event Input 1 Select the effect of closing the event input 1 switch no disables event input 1 LOC locks ou...

Page 63: ...une the cur rent control set point AtSP This prompt always appears Default 50 90 150 AtSP AtSP AtSP Ramping Function for Channel A Select when channel A will enter ramping mode Strt Activates ramping...

Page 64: ...ill enter ramping mode Strt Activates ramping on power up only StPt Activates ramping on power up and any set point change rP b This prompt always appears Default OFF Strt StPt rP b rP b rP b Ramp Rat...

Page 65: ...WATLOW Series 998 User s Manual 4 37 Setup Menus Chapter 4 Notes...

Page 66: ...ing on controller configuration NOTE The Communications Menu appears only on controllers equipped with communications hardware 99__ ____ _R__ or 99__ ____ _S__ See Data Communications with the Series...

Page 67: ...e in the upper display The new value will not take effect until after a five second delay or until you press the Mode key Baud Rate Select the communications speed bAUd This prompt appears only on con...

Page 68: ...ss for the controller The computer will use this address when communicating with this controller Addr This prompt appears only on controllers equipped with communica tions hardware for EIA TIA 485 and...

Page 69: ...y of these menus The controller s con figuration and model number determine which prompts appear After stepping through each menu the Series 998 returns to the Operation Menu prompt Use the Up arrow a...

Page 70: ...3S CLOS Ot3s Prompts may not appear depending on controller configuration Reaching the System Menu TL TL W WA PROCESS DISPLAY MODE 1A 2A 1B 2B CH A CH B SERIES 998 AUTO MAN SYS OPEr SP2A Set Point 2A...

Page 71: ...fter a five second delay or until you press the Mode key Set Point 2A Set the operating set point for output 2A Allows output 2A to operate as a boost heat or a boost cool output The default setting d...

Page 72: ...o OpEn CLOS Ei1S Ei1S Output 3 Status Indicates whether the output 3 circuit is energized CLOS or de energized OPEn This is a read only prompt Ot3S This prompt appears only in controllers with output...

Page 73: ...lue of value of A3HI AL3 AL3 sensor rL1 or rL2 A3LO Output Menu range Input Menu dEA or dEb 999 0 AL3 AL3 A3LO A3LO Output Menu Alarm 3 High Select the high trigger value for the output 3 alarm A3HI T...

Page 74: ...lue of value of A4HI AL4 AL4 sensor rL1 or rL2 A4LO Output Menu range Input Menu dEA or dEb 999 0 AL4 AL4 A4LO A4LO Output Menu Alarm 4 High Select the high trigger value for the output 4 alarm A4HI T...

Page 75: ...User s Manual 5 7 Operation Menus Chapter 5 Operation System Auto tune Initiate an auto tune AUt This prompt always appears Default OFF PidA Pidb AUt AUt AUt NOTE For more informa tion on auto tune s...

Page 76: ...Figure 5 8 The PID A Menu Press the Mode key to step through the prompts Press the Up arrow key to step through the prompt values The Down arrow key backs through the values 00 dE1A 01 dE1A 99 dE1A 0...

Page 77: ...press the Mode key Proportional Band Output 1A or 2A Select the proportional band for PID channel A outputs If set to 0 it functions as an on off control and the switching differential is determined b...

Page 78: ...A This prompt appears only if dFL Calibration Menu is set to US and Pb1A is not set to 0 Default 00 9 99 repeats min rE1a rE1a Integral Output 1A or 2A Adjust the control action to eliminate the offse...

Page 79: ...is prompt appears only if dfL Calibration Menu is set to US and Pb1A is set higher than 0 Default 00 99 min rA1A rA1A Derivative Output 1A or 2A Adjust the derivative to eliminate overshoot on startup...

Page 80: ...ion of the channel A heating output and cooling output If you select a positive value the heat and cool outputs cannot be energized at the same time If you select a negative value both outputs can be...

Page 81: ...om the controller s upper display System Menu p 5 2 PID A Menu p 5 8 PID B Menu p 5 13 998 SP2A Set Point 2A 998 SP2B Set Point 2B SYS OPEr PIdA OPEr PIdb OPEr 00 dE1b 01 dE1b 99 dE1b 02 dE1b Figure 5...

Page 82: ...Output 1B or 2B Select the proportional band for PID channel A outputs If set to 0 it functions as an on off control and the switching differential is determined by the HY1b or Hy2b value Output Menu...

Page 83: ...B This prompt appears only if dFL Calibration Menu is set to US and Pb1b is not set to 0 Default 00 9 99 repeats min rE1b rE1b Integral Output 1B or 2B Adjust the control action to eliminate the offse...

Page 84: ...is prompt appears only if dfL Calibration Menu is set to US and Pb1b is set higher than 0 Default 00 99 min rA1b rA1b Derivative Output 1B or 2B Adjust the derivative to eliminate overshoot on startup...

Page 85: ...ion of the channel B heating output and cooling output If you select a positive value the heat and cool outputs cannot be energized at the same time If you select a neg ative value both outputs can be...

Page 86: ...5 18 WATLOW Series 998 User s Manual Operation Menus Chapter 5 Notes...

Page 87: ...a menu You will not see every prompt in any of these menus The controller s con figuration and model number determine which prompts appear After stepping through each menu the Series 998 returns to th...

Page 88: ...es Prompt may not appear depending on controller configuration Reaching the Panel Lockout Menu 0 LOC 1 LOC 3 LOC 2 LOC nonE Inpt rEAd Inpt FULL Inpt PLOC Panel Lockout Menu Fcty Factory Menu Prompt LO...

Page 89: ...Press the Mode key to display the first prompt in the lower display and its value in the upper display Use the Up arrow and Down arrow keys to change the value in the upper display The new value will...

Page 90: ...lt none read FULL SYS SYS SYS PID A Menu Lockout Select the lockout level for the PID A Menu Set the lockout to no lock out none read only read or full lockout FULL PidA This prompt always appears Def...

Page 91: ...none read FULL InPt InPt InPt Output Menu Lockout Select the lockout level for the Output Menu Set the lockout to no lockout none read only read or full lockout FULL OtPt This prompt always appears De...

Page 92: ...ns hardware 99__ ____ _R__ or 99__ ____ _S__ Default none read FULL COM COM COM Diagnostics Menu Lockout Select the lockout level for the Diagnostics Menu Set the lockout to no lockout none read only...

Page 93: ...WATLOW Series 998 User s Manual 6 7 Factory Menus Chapter 6 Notes...

Page 94: ...iagnostics Menu Use the Up arrow key to step from the Panel Lockout Menu PLOC to the Diagnostics Menu diag Press the Up arrow and Down arrow keys together and hold until the SEt prompt appears in the...

Page 95: ...998 XUMN Rev N02 SOFt This prompt always appears Serial Number Shows the controller s serial number The first two letters in the upper display are to indicate that the controller is in serial number m...

Page 96: ...is installed in the controller Please docu ment this value before contacting the factory for technical assistance Input Types none no input module tc thermocouple only module UOFF universal off Urtd u...

Page 97: ...one no output module A SSr1 0 5A solid state relay K SS1S 0 5A solid state relay with suppression B dc switched dc open collector C rLyc form C relay E rLcS form C relay with suppression D rLAb relay...

Page 98: ...diSP This prompt always appears Default no yes disp disp Test Outputs This prompt tests each output To run the test scroll through the Diagnostics Menu until tout is shown in the lower display Use th...

Page 99: ...WATLOW Series 998 User s Manual 6 13 Factory Menus Chapter 6 Notes...

Page 100: ...t press or to advance to the CAL prompt The Calibration Menu CAL begins with input 1 prompts and continues through to output 3 prompts Located at the end of the Calibration Menu are the Restore Factor...

Page 101: ...t always appears Default no yes rSt rSt Default Set the operating parameter defaults to U S or international mea sures US U S sets the controller to F rate in minutes proportional band in degrees or u...

Page 102: ...6 16 WATLOW Series 998 User s Manual Factory Menus Chapter 6 Notes...

Page 103: ...iated channel is set to 0 and that channel goes into an on off mode of control at the channel s set point percentage determined by the AtSP parameter The channel s displayed set point remains unchange...

Page 104: ...from minutes to hours to obtain optimum values If you are not familiar with tuning a thermal system we suggest you obtain and become familiar with the reference below before attempting to tune your sy...

Page 105: ...to the new set point without overshooting or approaching the set point too slowly 6 Calibration Offset Adjustment You may want your system to control to a process value other than the value coming fr...

Page 106: ...he output value appears in the lower display In the automatic operation the set point appears in the lower display Changing the Output 3 Alarm Jumper If you have model number 99_ _ _ _ _ _ J _ _ _ out...

Page 107: ...auses a corresponding shift in the deviation alarm Low alarms are usually set at a negative deviation while high alarms are a positive deviation Example If your set point is 100 F and a deviation alar...

Page 108: ...ut The A D value is above the range limits but within the A D con version limits Make sure input settings in the Input Menu match your sensor E1 4 or E2 4 A D overflow error The input 1 or 2 A D circu...

Page 109: ...FAIL is set to bPLS Global Menu and the control was in auto operation when the error occurred it goes into manual power operation If the output power is less than 75 5 power and there was a change in...

Page 110: ...al To clear an error code If Err is set to nLA the error code should clear once the problem is corrected If Err is set to LAt correct the problem and cycle power You can also clear the error by pressi...

Page 111: ...aten in a semiconductor oven In the past a control with a 4 20mA output was required to be used with a power control having burst fire control circuitry This result ed in additional system cost Now th...

Page 112: ...operating range is from 600 to 900 F The chart recorder requires a 4 20mA signal To achieve this set the following prompts in the Output Menu Set Aout to PrcA to identify the channel A process as the...

Page 113: ...e on at the same time With the process in the dead band while it is a positive dead band the output value is determined by adding the output value from each control output and applying the result to t...

Page 114: ...Notes Applications Chapter 8 8 4 WATLOW Series 998 999 User s Manual...

Page 115: ...ncorporate into their products with confidence Watlow Controls resides in a 100 000 square foot marketing engineering and manufacturing facility in Winona Minnesota Returns 1 Call Watlow Customer Serv...

Page 116: ...Germany Many DIN standards have worldwide recogni tion DIN See Deutsche Industrial Norm droop In proportional controllers the difference between set point and actual value after the system sta bilizes...

Page 117: ...rtional value of PID control range The area between two limits in which a quantity or value is measured It is usually described in terms of lower and upper limits rate Anticipatory action that is base...

Page 118: ...ned action three mode control Proportioning control with inte gral reset and derivative rate Also see PID time proportioning control A method of controlling power by varying the on off duty cycle of a...

Page 119: ...nu lockout 6 6 DIP switch locations and functions 1 1 1 4 Display key 3 1 Display Loop ii 3 2 display loop parameters 3 2 display lower 3 1 display upper 3 1 Down arrow key 3 1 dual switched dc 2 10 2...

Page 120: ...2 8 2 9 RTD calibration curve 1 4 9 RTD calibration curve 2 4 13 RTD input 2 4 S safety information inside front cover sensor installation guidelines 2 4 serial number 6 9 set point 2A 5 3 set point...

Page 121: ...nu lockout 6 5 IntF interface type 4 40 It1a integral output 1A 5 10 It1b integral output 1B 5 15 It2a integral output 2A 5 10 It2b integral output 2B 5 15 itY1 input 1 module type 6 10 itY2 input 2 m...

Page 122: ...1598 to 3300 F 870 to 1816 C Type R 32 to 3200 F 0 to 1760 C Type S 32 to 3200 F 0 to 1760 C RTD Resolution DIN or JIS 1 DIN 328 to 1472 F 200 to 800 C 1 JIS 328 to 1166 F 200 to 630 C 0 1 DIN and JIS...

Page 123: ...y1 Form A 2A without contact suppression F Single universal process 0 5V dc 1 5V dc 0 10V dc 0 20mA dc 4 20mA dc isolated K Dual solid state relay Form A 0 5A without contact suppression Output 3 A No...

Page 124: ...61000 3 3 1995 Limitations d carts de tension et de papillotement 73 23 EEC Directive li e aux basses tensions EN 61010 1 1993 Exigences de s curit pour le mat riel lectrique de mesure commande et de...

Page 125: ...WATLOW Series 998 User s Manual A 11 Appendix Notes...

Page 126: ...Watlow Series 998 User s Manual Watlow Controls 1241 Bundy Boulevard P O Box 5580 Winona Minnesota USA 55987 5580 Phone 507 454 5300 Fax 507 452 4507 http www watlow com...

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