Electra EMD 40 - Sequence Diagrams

7-10
CONTROL SYSTEM
Revision Y05-01
Service Manual - EMD Series
3.3 Sequence Diagrams
3.3.1 Maintaining room temp at desired level by comparing RT and SPT with user defined IFAN speed.
(RT - SPT) [
o
c]
+3
+2
+1
0
-1
-2
ON
OFF
ON
OFF
USER FAN SPEED
ON
OFF
COMP
(WVL)
OFAN
IFAN
RV