52 RLC-SVD03A-EN
Module Power and Miscellaneous I/O
Setpoint Priority
There are many ways in which the Chilled Water and Current Limit setpoints
can be adjusted or reset when the Options Module is present in the Chiller
control system. The following flow charts show how these methods are prior-
itized and arbitrated under normal operating conditions. When abnormal
conditions are present, such as loss of Tracer communications or out of range
values on external setpoint inputs, the system will default to other methods.
Table 18 Input Values vs. External Current Limit Setpoint
Resist (ohms)
INPUTS
Current (ma) Voltage (Vdc)
Resulting Current
Limit Setpt (%RLA)±5%
49000 4.0 2.0 40
29000 6.0 3.0 50
19000 8.0 4.0 60
13000 10.0 5.0 70
9000 12.0 6.0 80
6143 14.0 7.0 90
4010 16.0 8.0 100
2333 18.0 9.0 110
1000 20.0 10.0 120
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