CleaverBrooks CFC-500 Operation, Service And Parts Manual page 197

Add-stage method, Add-stage detection
timing,
Add-stage request
An Add-stage method implements the criteria for adding
another stage. Criteria that may apply are the firing rate of a
stage or stages vs. a threshold, the amount of operating point
versus setpoint error seen by the master, the rate at which
setpoint error is developing, and the rate at which a stage or
stages are approaching their maximum or baseload firing rate.
Typically these use Add-stage detection timing to determine
how long these things have persisted. When all criteria have
been met for a sufficient time, then an Addstage request is
active.
MEAN WELL S-25-12
POWER SUPPLY
(COMMON GND)
WIRING KEY
LINE VOLTAGE
LOW VOLTAGE
DATA
1 DO NOT CONNECT THE DISPLAY TO TERMINALS 1 2 3.
THIS WILL RENDER THE DISPLAY INOPERABLE.
DISPLAY CAN ALSO BE CONNECTED TO MB2; A, B, C.
2
FALCON HAS TWO AVAILABLE MODBUS CONNECTIONS:
3
THIS CONFIGURATION REQUIRES ONE FOR
LEAD LAG COMMUNICATION AND ONE FOR A
SYSTEM DISPLAY.
THERE IS NOT A CONNECTION AVAILABLE FOR A
LOCAL TOUCHSCREEN DISPLAY.
120
L1
VAC
L2
NEUTRAL (L2) N
120VAC (L1) L
EARTH
GROUND
12 DC OUT +
V+
DC OUT
V-
VADJ
Fig. 28. Lead lag wiring diagram.
Drop-stage method, Drop-stage detection
timing, Drop-stage request
A Drop-stage method implements the criteria for dropping a
stage. Criteria that may apply are the firing rate of a stage (or
stages) vs. a threshold, the amount of operating point versus
setpoint error seen by the master, the rate at which setpoint
error is developing, and the rate at which a stage or stages are
approaching their minimum firing rate. Typically these use
Drop-stage detection timing to determine how long these
things have persisted. When all criteria have been met for a
sufficient time, then an Drop-stage request is active.
DISPLAY
COM1
1 2 3 4
5 6 7
GND
(B) (A) N/C N/C
+12 +12
(C)
A
MB1
3
A
MB1
A
MB1
A
MB1
73
COM2
8 9
(A) (B)
2
C 1 B 2 A 3
MB2 ECOM J3
1
LL MASTER
AND SLAVE 1
C 1 B 2 A 3
J3
MB2 ECOM
SLAVE 2
C 1 B 2 A 3
J3
MB2 ECOM
SLAVE 3
C 1 B 2 A 3
J3
MB2 ECOM
SLAVE 4
CB FALCON
C B
C B
C B
C B
750-265