The
Dual Zone
Evaporator Control System
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The
Dual Zone |
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The
CooLogic
by BMIL (Dual Zone Evaporator Control System) Specifications:
1 Physical 1.1 Enclosure, mounting hardware 1.1.1 8.1” W x 12.4” H x 3.1” D. 1.2 Operating Environment 1.2.1 45°F - 120°F. 30% - 95% relative humidity, non-condensing. 1.3 Membrane – Overlay. 1.3.1 Overlay artwork drafted and is waiting for approval from BMIL. 2 Inputs 2.1 Power 2.1.1 95VAC to 240VAC Universal Power, 50/60 Hz, 2 Amps. 2.2 Thermistor NTC Sensor with 20 feet cable. Qty (2). 2.3 Inputs 2.3.1 Temperature Sensor Input. Qty (2). Accepts thermistor NTC Sensor with 20 feet cable. 2.3.2 Door Alarm Input. Qty (2). 2.3.2.1 OPEN signal – Door Closed. 2.3.2.2 CLOSED signal – Door Open.
2.3.2.3 Activates a timer
when door indicates OPEN. Timer duration is user settable. When timer 2.3.2.4 Auto Clear Alarm when door closed.
2.3.3.1 Accepts thermistor NTC sensor with 20 feet cable or Snap-on thermodisc.
2.3.3.2 When System is in
defrost, the heater defrost cycle will be terminated when the Termination
2.3.3.3 When System is in
refrigeration and the Termination Sensor temperature is higher than its set 2.3.4 Sherlock Leak Sensor Input. Qty (2). Accepts Sherlock CMOS Sensor or Infrared Sensor. 2.4 User Interface, (5) Momentary Micro-Push Buttons. 2.4.1 UP / DOWN – Scroll through menus, sub-menus and to set operating parameters. 2.4.2 SET (Select) – Execute the selected function and to access programming settings. 2.4.3 EXIT - to exit current menu, sub menu and abort any changes. 2.4.4 CLEAR / SILENCE ALARM - to silence and/or clear an active alarm. 3 Outputs 3.1 Relay Outputs. 3.1.1 General 3.1.1.1 Pilot Duty Relay. 3.1.1.1.1 1 Form C, SPDT, 8 amp @ 250VAC Resistive, 6.3 amp @ 250VAC Inductive. 3.1.1.1.2 3.15 Amp fuse in series with common contact. 3.1.1.1.3 Electrical noise suppression device on N.O. contact. 3.1.1.1.4 Visual LED on each relay. 3.1.1.1.5 All outputs utilize screw terminals 3.1.1.2 High amperage relay. 3.1.1.2.1 1 Form A, DPST, 30 amp @ 250VAC Resistive. 3.1.1.2.2 All outputs utilize screw terminals. 3.1.2 Liquid Line Solenoid Relays. Qty (2). 3.1.2.1 Pilot Duty Relay. 3.1.2.2 To Operate LLS valve. 3.1.2.3 Configurable for either NO or NC valve.
3.1.2.4 To OPEN valve when
cooling is active. To CLOSE valve when cooling is not active, in Pump 3.1.3 Evaporator Fan Relay. Qty (2). 3.1.3.1 High Amperage Relay. 3.1.3.2 To operate Evaporator Fans Directly. 3.1.3.3 To CLOSE when fan is active. To OPEN when fan is not active, in Defrost, in Fans Start Delay. 3.1.3.4 To activate upon controller activation. 3.1.4 Defrost Relays. Qty (2). 3.1.4.1 High Amperage Relay. 3.1.4.2 To operate Electric Defrost Coils Directly. 3.1.4.3 To CLOSE when in Defrost. To OPEN when not in Defrost. 3.1.5 Alarm Relay. Qty (6). 3.1.5.1 Pilot Duty. 3.1.5.2 System Alarm Relays energized during normal operations.
3.1.5.3 System Alarm Relays
de-energized during alarm conditions. Loss of power will indicate an 3.1.5.4 Dry-Contact. 3.1.5.5 Alarm Assignments. 3.1.5.5.1 System Alarm, non-silenceable. Qty (1) 3.1.5.5.2 System Alarm, Silenceable. Qty (1) 3.1.5.5.3 Leak Detection Level 1, Non-Silenceable. Qty (1) 3.1.5.5.4 Leak Detection Level 1, Silenceable. Qty (1) 3.1.5.5.5 Leak Detection Level 2, Non-Silenceable. Qty (1) 3.1.5.5.6 Leak Detection Level 2, Silenceable. Qty (1) 3.2 Communications (Optional). 3.2.1 RS485 hardware and firmware. 3.2.2 “Compak” communication adapter (One per site). 3.2.3 "Gencom" Local / Remote Communications Software. 3.2.4 Modem for Remote Communications (One per site). 4 User Interface - Audio Visual. 4.1 Display. 4.1.1 2 x 16 Characters LCD. 4.1.2 Yellow Back Light. 4.1.3 Indications (Normal Mode). 4.1.3.1 Current Temperature. 4.1.3.2 Current Leak Detection Levels. 4.1.3.3 Current Control Status. 4.2 Status LEDs 4.2.1 System #1 Liquid Solenoid Open, Cooling Mode – Green. 4.2.2 System #2 Liquid Solenoid Open, Cooling Mode – Green. 4.2.3 System #1 Fan On – Green. 4.2.4 System #2 Fan On – Green. 4.2.5 System #1 In Defrost – Green. 4.2.6 System #2 In Defrost – Green. 4.2.7 System Alarm – Red. 4.2.8 Refrigerant Leak Alarm – Red. 4.3 Audio Alarm. 4.3.1 Piezo-Electric Buzzer. 4.3.2 90dba at 3ft. 4.3.3 Indicates alarm condition. 5.1 Temperature Control 5.1.1 Operate two independent cooling systems with one Control.
5.1.2 Controller shall OPEN LLS when temperature is above the Temperature Control Set point plus the 5.1.3 Controller shall CLOSE LLS when temperature is below the Temperature Control Setpoint. 5.2 Defrost Control 5.2.1 Operate two independent defrost systems with one Control. 5.2.2 The sequence of Defrost is Pump Down Cycle, Heater On Cycle, Drip Cycle, and Fan On delay. 5.3 Programmable Settings, two systems. 5.3.1 Temperature Setpoint (-45°F - 110°F). 5.3.2 Temperature Differential (0.5°F - 5.0°F). 5.3.3 High Temperature Alarm (-45°F - 110°F). 5.3.4 High Temperature Alarm Delay (2 - 120 minutes). 5.3.5 Low Temperature Alarm (-45°F - 110°F). 5.3.6 Low Temperature Alarm Delay (2 - 120 minutes). 5.3.7 Number of defrosts per day (0 - 6). 5.3.8 Adjustable pump down cycle (0- 240 minutes). 5.3.9 Adjustable defrost time (0 - 240 minutes). 5.3.10 Adjustable drip cycle (0 - 240 minutes). 5.3.11 Adjustable fan off cycle (0 - 240 minutes). 5.3.12 Refrigerant Leak Alarm Setpoint (20 - 999 PPM). 5.3.13 Refrigerant Leak Alarm delay (1 - 120 minutes) 5.4 Sensor Calibration Menu. 5.4.1 Calibrate each Sensor within ±10°F of the raw reading. 5.4.2 Calibrate refrigeration leak sensor. 5.5 Fan off and liquid valve closed when door opened.
5.5.1 User selectable
option. If enabled, the fan is turned off and liquid valve is closed when
door is opened. 5.6 Relay Output On/Off Testing Menu. 5.7 Alarm Conditions.
5.7.1 High Temperature
longer than the high temperature alarm delay - Activates Alarm Relay, Buzzer
ON, LCD
5.7.2 Low Temperature longer
than the low temperature alarm delay - Activates Alarm Relay, Buzzer ON, LCD
5.7.3 High Temperature on
Termination Sensor is equals to or greater than the termination set point
for more than
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Copyright 1996, BMIL International, Inc. All rights reserved
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