IOMM AGZB1
AGZ 010B through 034B
35
Inputs/Outputs
Table 18, Inputs and Outputs
Analog Inputs
#
Description
Signal Source
Range
1
Reset of Leaving Water Temperature
4-20 mA Current
0 to10 degrees
60
°
F max inlet
2
Evaporator Refrigerant Pressure
0.5 to 4.5 VDC (NOTE 1)
0 to 132 psi
3
Condenser Refrigerant Pressure
0.5 to 4.5 VDC (NOTE 1)
3.6 to 410 psi
4
Leaving Evaporator Water Temperature
Thermister (10k at 77
°
F, 25
°
C)
-58 to 212°F
5
Outside Ambient Temperature
Thermister (10k at 77
°
F, 25
°
C)
-58 to 212°F
NOTE 1: Value at the converter board input. Value at the converter board output is 0.1 VDC – 0.9 VDC.
Analog Outputs
#
Description
Output Signal
Range
1-4
None
--
--
Digital Inputs
#
Description
Signal
Signal
1
Unit OFF Switch
0 VAC (Stop)
24 VAC (Auto)
2
Remote Start/Stop
0 VAC (Stop)
24 VAC (Start)
3
Evaporator Water Flow Switch
0 VAC (No Flow)
24 VAC (Flow)
4
Motor Protection
0 VAC (Fault)
24 VAC (No Fault)
5
Ice Mode Switch
0 VAC (Normal)
24 VAC (Ice)
6
Phase Voltage Fault
0 VAC (Fault)
24 VAC (No Fault)
7
Open
--
--
8
Open
--
--
Digital Outputs
#
Description
Load
Output OFF
Output ON
1
Alarm
Alarm Indicator
Alarm OFF
Alarm ON
2
Evaporator Water Pump
Pump Contactor
Pump OFF
Pump ON
3
Liquid Line
Solenoid
Cooling OFF
Cooling ON
4
Motor Control Relay #1
Starter
Compressor OFF
Compressor ON
5
Motor Control Relay #2
Starter
Compressor OFF
Compressor ON
6
Condenser Fan #1
Fan Contactor
Fan OFF
Fan ON
7
Condenser Fan #2
Fan Contactor
Fan OFF
Fan ON
8
Condenser Fan #3
Fan Contactor
Fan OFF
Fan ON
Setpoints
The setpoints shown in Table 19 are battery-backed and remembered during power off, are
factory set to the
Default
value, and can be adjusted within the value shown in the
Range
column.
The PW (password) column indicates the password level that must be entered in order to
change the setpoint. Passwords are as follows:
O = Operator [0100]
M = Manager, [2001] M level settings are not normally changed for chilled water air-
conditioning applications.
Summary of Contents for AGZ 010BM
Page 67: ......
