RWF ROTARY SCREW COMPRESSOR UNITS
OPERATION
S70-600 IOM (OCT04)
Page 18
•
Press [Menu] > [Control Setup] > [More] > [PID
Setup], you should see the screen in Figure 18.
Figure 18
•
Press [PID Setup] for Output Channel 1 PID.
Refer to the screen in Figure 19 for the following steps:
•
Press
[Change Setpoints]
•
Set the following setpoints as a starting point. Adjustment
to the Proportional gain may be necessary. The use of
values in the integral and derivative gains should not be
necessary.
Setpoint: 150°F for Ammonia
160°F for R-22, R134A and R507
Dead Band: 2.0°F
Proportional Gain: 5.00
Integral Gain: 0.00
Figure 19
Derivative Gain: 0.00
High Limit: 100%
Low Limit: 0%
Off Value: 0%
Use the
[Control]
,
[Action],
and
[Off Value]
keys to set
the following:
•
Set the
Control
for: When Running
•
Set the
Action
for: Forward
•
Set the
Off Value
for: 0%
•
The
Actual Value
should be reading the current dis-
charge temperature.
