User manual
Document no. : 032189
Version : V1.5
MC 785 CHILLER-2
Customer: Heinen & Hopman
Page: 4 of 16
1.3
Inputs and outputs
Sensors :
Inlet temperature sensor
(10K, 2-wire)
Outlet temperature sensor
(10K, 2-wire)
HP-2 Pressure sensor-1 PX77 range: 0-25 bar
(2-wire 4/20mA output)
OIL-2 Pressure sensor-2 PX77 range: 0-10 bar
(2-wire 4/20mA output)
LP-2 Pressure sensor-3 PX77 range: 0-10 bar
(2-wire 4/20mA output)
HP-1 Pressure sensor-4 PX77 range: 0-25 bar
(2-wire 4/20mA output)
OIL-1 Pressure sensor-5 PX77 range: 0-10 bar
(2-wire 4/20mA output)
LP-1 Pressure sensor-6 PX77 range: 0-10 bar
(2-wire 4/20mA output)
Note: Pressure sensors need external supply thru SM615 (15Vdc)
Communication:
I
2
C-bus (for LMS-units)
(2-wire shielded min. 0.75mm
2
)
RS485-network-1 (for LMS Analog-out mod.)
(2-wire shielded min. 0.75mm
2
)
RS485-network-2 (for PC)
(2-wire shielded min. 0.75mm
2
)
1.4
On LMS Modules
Modules on the I
2
C expansion-bus of the MC785-CHILLER 2 controller;
LMS Dig.in-1 :
IN-1: Failure chiller pump-1
(NC potential free input contact)
(max. 6 inputs)
IN-2: Failure chiller pump-2
(NC potential free input contact)
IN-3: Waterflow-1 contact
(NC potential free input contact)
Jumpers
IN-4: Waterflow-2 contact
(NC potential free input contact)
J2
IN-5: Thermistor INT69-1
(NC potential free input contact)
J1
IN-6: Thermistor INT69-2
(NC potential free input contact)
LMS Dig.in-2 :
IN-1: Failure compressor-1
(NC potential free input contact)
(max. 6 inputs)
IN-2: Failure compressor-2
(NC potential free input contact)
IN-3: Failure sea water pump-1
(NC potential free input contact)
Jumpers
IN-4: Failure sea water pump-2
(NC potential free input contact)
J2
IN-5: Maximum thermostat heating
(NC potential free input contact)
J1
IN-6: Cabinet cooling thermostat
(NC potential free input contact)
LMS Dig.in-3 :
IN-1: Generator load reduction
(NC potential free input contact)
(max. 6 inputs)
IN-2: Emergency stop
(NC potential free input contact)
IN-3: Interlock cooling water failure
(NC potential free input contact)
Jumpers
IN-4: Maximum compressor capacity
(NC potential free input contact)
J2
IN-5: Release startup compressor-1
(NC potential free input contact)
J1
IN-6: Release startup compressor-2
(NC potential free input contact)
LMS Relay-1 :
RY1: Start compressor-1 U1/SN
(SPDT C-NO-NC, 250Vac/8A non-inductive)
(max. 7 outputs)
RY2: Start compressor-2 U2/SN
(SPDT C-NO-NC, 250Vac/8A non-inductive)
RY3: Start sea water pump-1 U3/SN (SPDT C-NO-NC, 250Vac/8A non-inductive)
Jumpers
RY4: Start sea water pump-2 U4/SN (SPDT C-NO-NC, 250Vac/8A non-inductive)
J2
RY5: Start chiller pump-1
(SPST C-NO, 250Vac/8A non-inductive)
J1
RY6: Start chiller pump-2
(SPST C-NO,250Vac/8A non- inductive)
RY7: Anti-condensation heating
(SPST C-NO, 250Vac/8A non-inductive)
LMS Relay-2 :
RY1: Alarm circuit A
(SPDT C-NO-NC, 250Vac/8A non-inductive)
(max. 7 outputs)
RY2: Alarm circuit B
(SPDT C-NO-NC, 250Vac/8A non-inductive)
RY3: Supply fluid valve compr-1
(SPDT C-NO-NC, 250Vac/8A non-inductive)
Jumpers
RY4: Supply fluid valve compr-2
(SPDT C-NO-NC, 250Vac/8A non-inductive)
J2
RY5: Startup request compr-1
(SPST C-NO, 250Vac/8A non-inductive)
J1
RY6: Startup request compr-2
(SPST C-NO, 250Vac/8A non-inductive)
RY7: Cooling cabinet
(SPST C-NO, 250Vac/8A non-inductive)