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32

ST 5220

QM 1336.rev.01

Interaction Between the Temperature Curve and the Mini-
mum Speed Curve

•

The minimum speed curve can be activated only if the tempera-
ture curve is already activated

•

All points of the minimum speed curve other than the first one are
automatically given day numbers identical to those specified for the
temperature curve. Only the first point of the minimum speed curve
has an adjustable day number. This day number must be greater or
equal to the day number specified for the first point of the tempera-
ture curve and less than the day number specified for the second
point of the temperature curve (see example 1).

TEMPERATURE CURVE

POINT

 1

POINT

 2

MINIMUM SPEED CURVE

d5

d20

d5 to d19 (adjustable)

d20  (not adjustable)

EXAMPLE 1

Table 1.

''Heater A Starting Temperature - 5.0°F (2.8°C)'

OR

''Set Point'', if the parameter settings are such that the
preceding value is greater than the set point.

 STAGE 4

OPERATION

THRESHOLD VALUE

Cooling

''Set Point - 5.0°F (2.8°C)''

Heating

Содержание Aerospeed 2.2 ST 5220

Страница 1: ...ST 5220 Temperature Controller USER S MANUAL Aerotech Inc FORM QM 1336 4215 Legion Dr Mason MI 48854 1036 USA October 1998 Ph 517 676 7070 Fax 517 676 7078 ST5220...

Страница 2: ...ETER SETTINGS 15 The Meaning of a Flashing Display 15 Locking the Parameters Settings 15 TEMPERATURE SETTINGS 16 TemperatureUnits 16 ViewingTemperatures 16 Temperature Set Point 19 TemperatureCurve 20...

Страница 3: ...n device on the supply circuit as well as an external relay on all ON OFF stages to prolong the life of the controller The room temperature where the controller is located MUST ALWAYS REMAIN BETWEEN 3...

Страница 4: ...onitor the operation of the system without having to enter the building MINIMUM VENTILATION CYCLE When ventilation is not required for cooling the first stage fans can be operated either continuously...

Страница 5: ...other protection devices are installed on the outputs of the controller to protect its circuitry in the case of an overload or overvoltage COMPUTER CONTROL The controller can be connected to a compute...

Страница 6: ...6 QM1336 rev 01 LOCATION OF THE CONTROLS S E T T I N G S A ER O TEC H I N C M ason M I 4 8 8 5 4 U S A S T 5 2 2 0...

Страница 7: ...N E V M U M I N I M E H T N E H W N O S N R U T N O O S L A E B O R P F E D D E T C E T E D S I E B O R P E V I T C E F E D A N E H W S E H S A L F M R A L A D E T C E T E D S I M R A L A N A N E H W...

Страница 8: ...hereas the other activates when current is supplied at its input For an alarm of the first type use the NOterminalasshownonthewiringdiagram Foranalarmofthesecondtype use the NC terminal Open the latch...

Страница 9: ...appropriate curve must be selected for Stage 1 according to the type of fan motors used see table on followingpage 1 Selecting a Motor Type for Stage 1 Refer to the list of motors on the following pa...

Страница 10: ...te for the motors used n Set the selection knob to STAGE 2 BANDWIDTH The bandwidth is displayed alternating with the letters bd n Press the push button The currently selected motor type is displayed a...

Страница 11: ...1 1 1 3 3 4 5 Minimum Speed 45 45 65 65 30 40 40 30 Minimum Voltage Output 81 42 101 101 101 107 117 130 CFM at 0 05 S P 50 50 120 110 140 600 1250 1250 Minimum Speed Setting and Motor Curve Selection...

Страница 12: ...tricalknockoutasothercables Donotconnecttheshieldfromtheprobe cable to an input or a ground 2 Extending the Probes Eachprobecanbeextendedupto500feet 150meters Toextendaprobe n Use a shielded cable of...

Страница 13: ...ush button If the probe connected to input 1 and supplied with the controller is not defective the letters PR1 are displayed alternating with the temperature measured by the probe If the probe is defe...

Страница 14: ...stages Set switches 3 and 4 to OFF to use both stages for cooling Set switch 3 to ON and switch 4 to OFF to use Stage 4 for heating and Stage 3 for cooling Set switches 3 and 4 to ON to use both stag...

Страница 15: ...ivated respectively To lock the parameter settings n Set internal switch 1 to ON The Locked Parameter Pilot Light turns on To unlock the parameter settings n Set internal switch 1 to OFF The Locked Pa...

Страница 16: ...eparately alternatingwiththe numericalvalue 1 Viewing the Room Temperature The room temperature is the average value of all temperatures measured by activated probes in proper operating condition n Se...

Страница 17: ...is displayed alternating with the letters Pr x etc Notes i Atleastoneprobemustbeactivatedatalltimes Ifonlyoneproberemains active the controller will lock the on off switch for that probe ii The displa...

Страница 18: ...by one notch The minimum is displayed alternating with the letters Lo n Turn the adjustment knob clockwise one notch further The maxi mum temperature is displayed alternating with the letters Hi n Tu...

Страница 19: ...and 99 9 F 40 0 C and 37 7 C Adjusting the Temperature Set Point n SettheselectionknobtoSETPOINT TEMP CURVE Thecurrentset point flashes on the display n Use the adjustment knob to adjust the set poin...

Страница 20: ...he curve When the last point of the curve is reached the temperature set point for that day is maintained until the curve is reactivated NOTES i Allsixpointsofthecurvemustbespecified Ifsixpointsarenot...

Страница 21: ...for each of the six points n Press the push button once again The word day is displayed alternating with a day number n Using the adjustment knob set the day number to the desired value n Pressthepus...

Страница 22: ...ROOM TEMPERATURE If you have previously defined the points on the curve n Set the selection knob to SET POINT TEMP CURVE The current value of the temperature set point flashes on the display n Press t...

Страница 23: ...button The current day number is displayed n Use the adjustment knob to set the day number to the desired value 4 Deactivating the Temperature Curve n Set the selection knob to SET POINT TEMP CURVE Th...

Страница 24: ...stages of constant speed fans Stages 3 and 4 The last cooling stage can also be configured as a mist stage COOLING OPERATION Room Temp Temperature Set Point STAGE 1 STAGE 2 STAGE 3 STAGE 4 Bandwidth...

Страница 25: ...ning At Stage 4 Starting Temp stage 4 fans start running If the room temperature falls At Stage 4 Starting Temp 1 5o F stage 4 fans return to a stop At Stage 3 Starting Temp 1 5o F stage 3 fans return...

Страница 26: ...ge1fansdonotrun TheStage 1 Pilot Light turns off The Stage 1 minimum speed can also be defined by a speed curve see below NOTE Thecontrollersuppliesmaximumvoltagetothevariable speedfans for 2 seconds...

Страница 27: ...deactivated or if the minimum speed curve is activated but not currently operating see below 2 Adjusting Stage 1 Time On and Time Off n Set the selection knob to STAGE 1 TIMER The current time on for...

Страница 28: ...rrent bandwidth is displayed alternating with the letters bd n Use the adjustment knob to adjust the bandwidth to the desired value 2 Adjusting the Stage 2 Starting Temperature The Stage 2 starting te...

Страница 29: ...tween10 and100 ofthefullspeed of the fans n Set the selection knob toSTAGE 2 MINIMUM SPEED The current minimum speed for Stage 2 flashes on the display n Use the adjustment knob to adjust the minimum...

Страница 30: ...The hysteresis is fixed at 1 5o F and determineswhenthefansreturntoastop Thedifferencebetweenthestarting temperatureandthestage3startingtemperaturecangofrom0 5 Fto20 0 F 0 3 C to 11 1 C n Settheselect...

Страница 31: ...utomatically over a given time period Each curve is defined by six points Each point specifies a day number and a fan speed for that day Once the points are defined the minimum speed curve must be act...

Страница 32: ...curve has an adjustable day number This day number must be greater or equal to the day number specified for the first point of the tempera ture curve and less than the day number specified for the se...

Страница 33: ...number of the temperature curve is d11 Therefore if you activate the minimum speed curve today it will effectively be in operation the moment you activate it In this case the current minimum speed wil...

Страница 34: ...ment knob to adjust the day number to the desired value For all other points of the curve the day number can not be adjusted n Press the push button once again The minimum speed for that day is displa...

Страница 35: ...t the selection knob to STAGE 1 MINIMUM SPEED CURVE The current minimum speed flashes on the display n Press the push button to display the points of the curve currently defined until the word OFF app...

Страница 36: ...lashes on the display n Press the push button to display the points of the curve currently defined until the word ON appears fourteen clicks n Turn the adjustment knob counterclockwise by one notch Th...

Страница 37: ...N MISTUNITSOFF TIMEON TIMEOFF MIST COOLING NUMBER OF HEATING STAGES MIST STAGE 0 4 1 3 The last cooling stage can be configured as a mist stage The number of heating stages determines which stage this...

Страница 38: ...o 60 minutes If Stage 3 is the mist stage n Set the selection knob to STAGE 3 START TEMP The stage 3 starting tempera ture is displayed alternating with the letters ST3 n Use the adjustment knob to se...

Страница 39: ...T4 n Use the adjustment knob to set the starting temperature to the desired value n Press the push button The mist time on is displayed alternating with the word On n Use the adjustment knob to set ti...

Страница 40: ...TTINGS If the room temperature rises at 72o F Heater B turns off at 74o F Heater A turns off If the room temperature falls at 72o F Heater A turns on at 70o F Heater B turns on Room Temperature Heatin...

Страница 41: ...the starting temperature to the desired value n Set selection knob to HEATER B START TEMP The current starting temperature for Heater B is displayed alternating with the letters Ht b n Use the adjust...

Страница 42: ...ture ranges from 40 0 F to 99 9 F 40 0 C to 37 7 C n Set the selection knob to ALARM LO HIGH The current low alarm temperature flashes on the display alternat ing with the word LO n Use the adjustment...

Страница 43: ...wrong position Set the switch to the correct position The display board interconnect cable is notproperlyplugged into the power supply board Be sure the cable is firmly pluggedin Thedisplay shows P w...

Страница 44: ...power cables through the same electrical knockout Do not run probe cables next to other power cables When crossing other power cables cross at 90 The stage 1 or 2 variablespeed cooling fans are notru...

Страница 45: ...small Adjust the stage 1 bandwidth to a higher value The stage 1 time on or time off is too short Adjust the stage 1 time on or time off to a higher value A variation in resist ance induced on a room...

Страница 46: ...0V to activate the motor Also be sure the stage 1 COMMON is supplied by line L1 The mist is not operatingas desired The mist time on and time off are in minutes Adjust the mist time on and time off co...

Страница 47: ...sure the cable is firmly pluggedin The fan motor or heater is defective Check if the motor or heater is defective by connecting it to an alternate power supply If it still is not operating replace the...

Страница 48: ...0A FAN 3 4 HP 115 VAC 1 5 HP 230VAC fuse F8 15A slow blow Stage 3 ON OFF output 115 230 VAC 60 Hz 30VDC 6A FAN 10A RES fuse F3 15A slow blow Stage 4 ON OFF output 115 230 VAC 60 Hz 30VDC 6A FAN 10A RE...

Страница 49: ...0 o F 1 1 1 o t 3 0 o C 2 e g a t S d e e p S m u m i n i M 0 4 0 0 1 o t 0 1 p m e T g n i t r a t S 5 8 7 o F 8 5 2 o C h t d i w d n a B t n i o P t e S t n i o P t e S o t 0 2 h t d i w d n a B o...

Страница 50: ...i m 0 6 o t 0 f f O e m i T s e t u n i m 0 g n i t r a t S A r e t a e H p m e T 5 2 7 o F 5 2 2 o C 5 0 p m e T f f O o 3 0 F o C 0 2 p m e T f f O o t o F 1 1 1 o C g n i t r a t S B r e t a e H p...

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