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OPERATION
VSD Baseplate Temperature Load Limiting
VSD Baseplate load limiting helps protect the unit
from tripping on the high VSD Baseplate Temp Safety.
A system is permitted to load normally as long as the
VSD Baseplate temperature is below the VSD Baseplate
Temperature Cutout – 8°F. Between the VSD Baseplate
Temperature Cutout –8°F and the VSD Baseplate Tem-
perature Cutout – 4°F, loading is inhibited, even though
increased loading is required. Between the VSD Base-
plate Temperature Cutout – 4°F and the cutout, forced
unloading is performed every 2 seconds according to
TABLE 10 below:
TABLE 10 - VSD BASEPLATE TEMPERATURE
LOAD LIMITING/UNLOADING
VSD BASEPLATE TEMPERATURE
Baseplate Temp. is between
Cutout- 8ºF
&
Cutout- 4ºF
Baseplate Temp. Cutout- 3.6ºF
Baseplate Temp. Cutout- 3.2ºF
Baseplate Temp. Cutout- 2.8ºF
Baseplate Temp. Cutout- 2.4ºF
Baseplate Temp. Cutout- 2.0ºF
Baseplate Temp. Cutout- 1.6ºF
Baseplate Temp. Cutout- 1.2ºF
Baseplate Temp. Cutout- 0.8ºF
Baseplate Temp. Cutout- 0.4ºF
Baseplate Temp. Cutout
184
LOAD LIMITING CONTROL (CON'T)
UN-
LOADING
0 Hz
1 Hz
2 Hz
3 Hz
4 Hz
5 Hz
6 Hz
7 Hz
8 Hz
9 Hz
10 Hz
FORM 201.21-NM1 (1223)
JOHNSON CONTROLS
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