276
JOHNSON CONTROLS
FORM 201.21-NM1 (616)
MICRO PANEL
ANALOG INPUT CONNECTIONS
TABLE 21 lists the Analog inputs and the circuit board
they are located on. Not all of the sensors are installed in
every unit, as some of them are optional. The software
must read the optional sensors if installed. The Analog
input signals are typically referenced to the common
(return, ground) in the system.
J12-3 can also be used as common, as well as chassis
ground, or the common terminal point on the Chiller
Control Board. See the wiring diagrams. The +DC Bus,
-DC Bus and ½ DC Bus voltages are measured in refer-
ence to one of the other DC Bus points. For example:
+DC Bus measured to ½ DC Bus.
TABLE 21 - ANALOG INPUT CONNECTIONS
BOARD HEADER ANALOG INPUT
Chiller Control Board J17-11 Remote Temperature Reset
Chiller Control Board J17-12 Remote Current Limit
Chiller Control Board J17-13 Spare 1
Chiller Control Board J17-14 Spare 2
Chiller Control Board J17-15 Spare 3
Chiller Control Board J8-7 Laeving Chilled Liquid Temp Sensor
Chiller Control Board J8-8 Return Chilled Liquid Temp Sensor
Chiller Control Board J8-9 Ambient Air Temp Sensor
Chiller Control Board J19-1 Comp 1 Motor Temperature 1
Chiller Control Board J19-2 Comp 1 Motor Temperature 2
Chiller Control Board J19-3 Comp 1 Motor Temperature 3
Chiller Control Board J19-6 Comp 2 Motor Temperature 1
Chiller Control Board J19-7 Comp 2 Motor Temperature 2
Chiller Control Board J19-8 Comp 2 Motor Temperature 3
Chiller Control Board J21-13 Sys 1 Suction Temperature
Chiller Control Board J21-3 Sys 1 Oil Temperature
Chiller Control Board J21-16 Sys 1 Discharge Temperature
Chiller Control Board J21-6 Sys 1 Flash Tank Level Sensor
Chiller Control Board J21-20 Sys 1 Suction Pressure
Chiller Control Board J21-22 Sys 1 Oil Pressure
Chiller Control Board J21-24 Sys 1 Discharge Pressure
Chiller Control Board J22-13 Sys 2 Suction Temperature
Chiller Control Board J22-2 Sys 2 Oil Temperature
Chiller Control Board J22-16 Sys 2 Discharge Temperature
Chiller Control Board J22-6 Sys 2 Flash Tank Level Sensor
Chiller Control Board J22-20 Sys 2 Suction Pressure
Chiller Control Board J22-22 Sys 2 Oil Pressure
Chiller Control Board J22-24 Sys 2 Discharge Pressure
Chiller Control Board J20-1 Comp 3 Motor Temperature 1
Chiller Control Board J20-2 Comp 3 Motor Temperature 2
Chiller Control Board J20-3 Comp 3 Motor Temperature 3
Chiller Control Board J20-6 Comp 4 Motor Temperature 1
Chiller Control Board J20-7 Comp 4 Motor Temperature 2
Chiller Control Board J20-8 Comp 4 Motor Temperature
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