background image

• Blackout duration: This duration is the number of hours that you add to the blackout start time

to form the blackout period. The blackout period refers to the time interval during which no

defrosts occur. Select the number of minutes for your preferred blackout period duration. The

duration starts at the blackout start time.

Binary inputs and alarms

The following sections provide details about binary inputs and alarms.

Binary input modes

Set each of the binary inputs to one of the modes in Table 21. When you select an input mode, one

or more controller actions associate with that mode.

Note:

• The system defines alarm actions separately from control actions.
• The selection of a particular input mode may affect the list of available alarms. For example,

Door Open Too Long becomes a potential alarm only when you define the input as Door

Open.

Table 21: Binary input modes and control actions

Mode

Control action when condition is true

None

The status of the binary input has no effect on the controller.

Refrigerant leak System shutdown. The system remains shut down as long as the refrigerant leak

condition persists. A system shutdown takes priority over the normal control of

the compressor, defrost, and fan or auxiliary relays.

Door open

You can select one of these options for this binary input mode:

• Normal control—indicates that the compressor relay, fan or auxiliary relay,

and defrost relay are unaffected

• Shut off cooling
• Energize auxiliary relay—if the relay is used for auxiliary purposes
• Fan relay off—if the relay is used for the fan

Setting up binary input modes

Set the two binary inputs to one of the modes in the following table. To configure an input mode,

indicate input that equates to the true condition.

Table 22: Controller binary inputs and mode selections

Binary input

Mode selection

Binary true state

1

OP/EN or CLO/SED

2

• None, or unused
• Refrigerant Leak
• Door open

OP/EN or CLO/SED

Table 23 explains the types of alarms that you can program on the controller.

Alarm setup parameters

The following table provides information about the controller’s alarms and their corresponding

true conditions.

MR5 Series Panel Mount Case Controller Technical Bulletin

52

Discontinued

Содержание MR5 Series

Страница 1: ...MR534 Johnson Controls www penncontrols com 2019 08 13 MR5 Series Panel Mount Case Controller Technical Bulletin LIT 12013019 D i s c o n t i n u e d...

Страница 2: ...2 MR5 Series Panel Mount Case Controller Technical Bulletin D i s c o n t i n u e d...

Страница 3: ...iled procedures 15 Controller UI 15 Standard and conditional screens 18 Workflow for setting up the controller 18 Navigating the controller screens 19 Navigating the high level status and setup start...

Страница 4: ...4 Info field codes 54 Connecting to a communications network 57 External communications adapter connection 57 Network and device requirements and limitations 58 Communications adapter wiring connectio...

Страница 5: ...me de contr le doit int grer des dispositifs de protection suppl mentaires Veiller dans ce cas int grer de fa on permanente d autres dispositifs tels que des syst mes de supervision ou d alarme ou de...

Страница 6: ...re 2 shows the panel cut out dimensions required to insert the controller into the panel Figure 1 MR5 Controller dimensions mm in Figure 2 MR5 Controller panel opening dimensions mm in MR5 Series Pane...

Страница 7: ...e sizes Terminal number Terminal block label Terminal Description function and requirements Required wire size 1 SN3 SN3 is an optional temperature sensor Configure SN3 as a case averaging sensor with...

Страница 8: ...output is 0 VDC to 10 VDC for termination resistance greater than 1000 ohms Signal output is 4 mA to 20 mA for termination resistance less than or equal to 300 ohms 0 30 mm 2 to 1 50 mm 2 22 AWG to 1...

Страница 9: ...I2 Open or closed state detection Dry contact switch Note Do not apply any voltage to BI terminals 19 20 and 21 Connect only user supplied dry contact switches to these terminals 0 34 mm 2 to 1 5 mm 2...

Страница 10: ...Interval is the time between the start of a defrost duration and the start of the next defrost duration Defrost types The controller provides defrost control for off cycle defrost systems on medium te...

Страница 11: ...mination sensor Temperature sensor defrost termination Temperature sensor defrost termination uses the defrost termination sensor SN2 mounted on the evaporator coil to sense the coil temperature and t...

Страница 12: ...n coincides with the time that the evaporator reaches the termination temperature The defrost sensor determines when the defrost duration is complete See Adaptive defrost setup parameters for more inf...

Страница 13: ...al on off refrigeration cycle based on load demand 1 ASD overrides load demand 2 When ASD elapses the existing demand closes the relay on 3 ASD starts when the relay opens off 4 Compressor relay cycli...

Страница 14: ...min to 15 min for the evaporator to freeze any remaining moisture before the evaporator fans turn on The following figure shows the controller relay states during defrost duration drip time delay and...

Страница 15: ...of the system status and alarms The Defrost and Alarm icons also function as keys You can use these keys to initiate unscheduled defrost cycles and clear system alarms You can also use the four touch...

Страница 16: ...lues during setup Displays four dashes during anti short cycle delay defrost duration drip time and fan delay countdowns When you select or edit a numerical parameter value the status field displays a...

Страница 17: ...ws yellow or is off the alarm relay is open The Alarm icon also functions as a key To acknowledge any active alarms press the Alarm key 11 Evaporator fan icon The Evaporator fan icon indicates the sta...

Страница 18: ...ctory default selections and values already entered on the system screens In most applications you must change the factory default selections and values to meet the specific refrigeration and defrost...

Страница 19: ...screens See the second row in Figure 8 3 Press DOWN and UP to move through the high level status and setup start screens 4 Press SET to select a high level status or setup start sceen 5 Press DOWN and...

Страница 20: ...Navigating the high level status and setup start screens Figure 8 High level status and setup start screens MR5 Series Panel Mount Case Controller Technical Bulletin 20 D i s c o n t i n u e d...

Страница 21: ...ens press SET For more information see Viewing the status n a QREV PSHC STATUS Conditional screen The QREV PSHC STATUS start screen is the top level start screen for accessing and viewing the QREV and...

Страница 22: ...ALARM SETUP The ALARM SETUP screen is the top level start screen for setting up the controller s alarms To go to the alarm setup screens press SET For more information see Setting up the alarm setup p...

Страница 23: ...nsor SN2 Current temperature value SN3 TEMPERATURE This screen displays the temperature at sensor SN3 Current temperature value CASE DEFROST AVG TEMPERATURE Conditional screen The weighted average tem...

Страница 24: ...OW TEMP ALARM Conditional screen This screen displays the status of the SN3 low temperature alarm The alarm condition is true if the temperature of SN3 is below the threshold value for a period of tim...

Страница 25: ...ns To navigate the screens press DOWN or UP The following table describes the QREV and PSHC status screens Table 9 QREV PSHC status screen descriptions values and selections Screen name Description Va...

Страница 26: ...te and time on the controller navigate to the high level SYSTEM SETUP start screen and press SET to go to the DATE TIME screen To move through the date and time screens press DOWN and UP Figure 9 Syst...

Страница 27: ...ime period select AM or PM and press SET Note The PERIOD screen displays only if you select the 12H time format on the TIME FORMAT screen AM PM To set the date format press SET n a DATE FORMAT Select...

Страница 28: ...press SET then navigate to the screens in Table 11 The selections you make on the following setup screens determine many of the setup screens that appear on the REFRIGERATION SETUP and DEFROST SETUP...

Страница 29: ...press SET n a To set the sensor type for SN2 press SET n a SN2 TYPE Select A99 NTC or NON none and press SET A99 NTC NON To set the offset value for SN2 press SET n a SN2 OFFSET Conditional screen Sel...

Страница 30: ...GAS To change the defrost termination type press SET DEFROST TERM TYPE Conditional screen Select time based defrost termination or temperature based defrost termination SN2 To save the selection pres...

Страница 31: ...led and connected to the controller or not select YES or NO and press SET Note If you select NO the QREV PSHC SUPERHEAT screen and the QREV PSHC REFRIGERANT screen do not display YES NO To set the sup...

Страница 32: ...SET A to Z 0 to 9 Space To set the units of temperature measurement press SET n a UNITS Select F Fahrenheit or C Celsius and press SET F C To set the display brightness level press SET n a DISPLAY BRI...

Страница 33: ...high level REFRIGERATION SETUP screen and press SET To move through the refrigeration setup screens and options press DOWN and UP Figure 14 Refrigeration setup screens navigation map Table 14 Refrige...

Страница 34: ...or more information ON OFF AVG To set the ASD time for the compressor press SET n a ANTI SHORT CYCLE DELAY Select the delay time value from the range 0 min to 12 min and press SET 0 min to 12 min To s...

Страница 35: ...f the termination type all defrost cycles terminate when the system reaches the defrost duration value 0 min to 99 min To set the drip time delay press SET n a DRIP TIME Conditional screen Select the...

Страница 36: ...he evaporator fans waits before turning on after the compressor relay closes post defrost duration and driptime delay 0 min to 15 min To set the defrost schedule type press SET n a DEFROST SCHEDULE TY...

Страница 37: ...edule the defrost cycles to start at equal intervals after the first defrost time select AUT OMA automatic on the DEFROST SCHEDULE screen To manually schedule the defrost cycles to start at preferred...

Страница 38: ...referred number of defrost cycles from the range 0 to 8 and press SET 0 cycles to 8 cycles To set the start time for the first defrost cycle press SET n a FIRST DEFROST TIME Conditional screen Set the...

Страница 39: ...ble 17 See Adaptive defrost setup parameters for more information Note To enable the ADAPTIVE DEFROST setup start screen navigate to the system setup menu flow Set SN3 MEASUREMENT to defrost and set t...

Страница 40: ...the most appropriate defrost duration for your system 1 min to 99 min To set the maximum time between defrost cycles press SET n a MAX TIME BETWEEN DEFROST Conditional screen To set the maximum time...

Страница 41: ...s Screen name Description Value or selection BI 1 This screen is the BI 1 setup start screen To go to the BI1 terminal setup screens press SET n a To set a binary input mode for BI1 press SET n a MODE...

Страница 42: ...nt leak mode If you select refrigerant leak mode for a binary input the mandatory action for that binary input is system shutdown Door open NOR MAL FAN OFF COO OFF AUX ON To select an action delay tim...

Страница 43: ...screens in Figure 8 lead to an alarm setup menu See Binary inputs and alarms for more information Note Except for the THRESHOLD screen all alarm setup menus have an identical structure Only high and...

Страница 44: ...Figure 20 Alarm setup navigation map part 2 of 4 MR5 Series Panel Mount Case Controller Technical Bulletin 44 D i s c o n t i n u e d...

Страница 45: ...Figure 21 Alarm setup navigation map part 3 of 4 45 MR5 Series Panel Mount Case Controller Technical Bulletin D i s c o n t i n u e d...

Страница 46: ...n a To enable or disable the alarm press SET n a ENABLE Select YES or NO and press SET YES NO To set the threshold for a temperature alarm press SET n a THRESHOLD Conditional screen Select the thresho...

Страница 47: ...NO To set the realarm interval press SET n a REALARM INTERVAL Conditional screen Select the interval value from the range 0 min to 99 min and press SET 0 min to 99 min SN1 LOW TEMP ALARM Conditional...

Страница 48: ...nsert a USB drive into the controller within 15 seconds The file export begins automatically n a To import a file press SET n a CONFIG FILE IMPORT To confirm a file import select YES and press SET YES...

Страница 49: ...type Units of temperature Celsius or Fahrenheit Display brightness System name On the system setup screens you can also create an access password download controller firmware updates and set up the QR...

Страница 50: ...f 30 F displays and controls as 27 F QREV and PSHC setup The controller can monitor and control an optional PENN QREV and PSHC The QREV is a proportional control expansion valve that uses microelectro...

Страница 51: ...on temperature after the expected defrost duration time elapses adaptive defrost shortens the next defrost interval Maximum time between defrosts Maximum time between defrosts defines the maximum numb...

Страница 52: ...ler Refrigerant leak System shutdown The system remains shut down as long as the refrigerant leak condition persists A system shutdown takes priority over the normal control of the compressor defrost...

Страница 53: ...delay Low Temperature The SN3 temperature is less than the low temperature alarm threshold value that you defined for a period of time equal to or greater than the alarm delay SN1 is in a state of fai...

Страница 54: ...ning condition is active in this situation The Alarm icon glows yellow to indicate an alarm warning Alarm warnings do not cause the alarm relay to energize and the system does not add an alarm to the...

Страница 55: ...n the auxiliary relay AVG Average Select to set up the SN1 Sensor Failure Mode for averaging When the system detects an SN1 failure condition the controller cycles the cooling system at an on off freq...

Страница 56: ...coefficient temperature sensor OFF Off SN1 Sensor Failure Mode When you select OFF and the system detects a sensor failure condition the controller ignores the sensor and setpoint control and maintain...

Страница 57: ...s is an application specific controller It supports connection to the following RS485 MS TP BACnet communications networks Standard BACnet network Verasys network Use the external communications adapt...

Страница 58: ...enables a network connection to RS485 MS TP BACnet networks including Johnson Controls Verasys networks 0 14 mm 2 to 0 34 mm 2 26 AWG to 22 AWG stranded wires and twisted leads cable Wiring the RS485...

Страница 59: ...rk trunk 2 Daisy chained devices on the RS485 network trunk 3 Isolated shield connection terminal 4 To the next device on the RS485 network trunk 5 220 ohm EOL resistor Connecting the EOL resistor The...

Страница 60: ...creens complete the following steps 1 On the HOME screen press and hold MENU ESC for 2 seconds to go to the STATUS start screen 2 Press DOWN to go to the SYSTEM SETUP start screen and press SET 3 Pres...

Страница 61: ...perature AI10218 45 F to 140 F 42 C to 60 C R Average Defrost Temperature AI10428 45 F to 140 F 42 C to 60 C R Compressor Relay BO10446 Inactive Active 0 Inactive 1 Active R Defrost Relay BO10449 Inac...

Страница 62: ...9 Unknown 20 Unknown 21 Unknown R Binary Input 1 State BI10020 Binary Input status 0 Open 1 Close R Binary Input 2 State BI10416 Binary Input status 0 Open 1 Close R Binary Input 1 Mode MV10461 1 None...

Страница 63: ...to 24 h W Blackout Duration AV10325 0 to 240 min W Reset History MV10412 1 No 2 Yes W Defrost Schedule MV10383 1 Automatic 2 Manual W Defrost Scheduled Per Day AV10326 Number of defrosts in a day 0 to...

Страница 64: ...n Sec R Eighth Defrost TV10819 00 00 00 to 23 59 59 Hr Min Sec R QREV PSHC Alarm Status BI10368 0 Normal 1 Alarm R Supported QREV PSHC Communication Loss BI10365 0 Normal 1 Alarm R Supported Alarm Ref...

Страница 65: ...240 VAC 240 VAC Resistive amperes 8 A 8 A 8 A 2 A Inductive amperes 3 A 3 A 3 A n a Pilot duty VA 72 VA 125 VA 125 VA n a Number of cycles 6K Table 32 SPST evaporator fan or auxiliary relay ratings b...

Страница 66: ...ties and specifications MR5 Series Panel Mount Case Controller Product Bulletin LIT 12013106 MR5 parts accessories and product code numbers MR5 Series Panel Mount Case Controller Catalog Page LIT 1901...

Страница 67: ...CP data or to install firmware upgrades Dimensions H x W x D 58 4 mm 2 3 in x 102 00 mm 4 0 in x 111 10 mm 4 37 in Weight 280 grams 0 6173 lb Compliance North America United States UL Listed SDFY SA51...

Страница 68: ...micro disconnection type 1 B Heat and fire resistance category D Rated impulse voltage 2500 V Over voltage category II Pollution degree 4 front face 2 back housing Table 37 ADPT MR5 RS485 Network Comm...

Страница 69: ...sor cable sheath Type A99BA shielded PVC cable Type A99BB PVC cable Type A99BC high temperature silicon cable Wire gauge 22 AWG 0 33 mm 2 Ambient storage conditions Type A99BA and A99BB 40 C to 105 C...

Страница 70: ...separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV te...

Отзывы: