OMM 1008-1
47
MOTOR Setpoint Screen
Figure 23, MOTOR Setpoint Screen
Table 21, MOTOR Setpoint Settings
Description
No.
Default
Range
Pass-
word
Comments
Nominal Capacity
10
100
0 to 9999 Tons
Determines when to shut off a compressor
Maximum LWT Rate
9
0.5
°
F/min
0.1 to 5.0
°
F/min
M
Inhibits loading if LWT change exceeds the setpoint
value.
Minimum LWT Rate
8
0.1
°
F/min
0.1 to 5.0
°
F/min
M
Additional compressor can start if LWT change is
below setpoint.
Soft Load Ramp Time
7
5 min
1 to 60 min
M
Time period to go from initial load point (% RLA) set
in SP 5 to 100% RLA
Initial Soft Load Amp
Limit
6
40%
10 to 100%
M
Initial amps as % of RLA uses SP4 & 6
Soft Load Enable
5
OFF
OFF, ON
M
Soft load on or off Uses SP6 & 7
Nameplate RLA
4
52 to 113 Amps
T
RLA value from compressor nameplate
Maximum Amps
3
100%
10 to 100%
T
% RLA above which loading is inhibited (Load Limit)
SP + 5% unloads compressor
Minimum Amps
2
40%
5 to 80%
T
% RLA below which unloading is inhibited
Demand Limit Enable
1
OFF
OFF, ON
O
ON sets %RLA at 0% for 4 mA external signal and
at 100% RLA for 20 mA signal
OFF – signal is ignored
