Sequence Of Operation Settings - Generac Power Systems GTS "W" Owner's Manual

3.13.7 SEQUENCE 7 - ENGINE COOL DOWN
TIMER
• After the switch re-transfers loads back to UTILITY,
this timer starts. When the interval has "timed out",
the automatic start circuit (Wires 178/183) is opened,
and the engine shuts down.
• Timer permits engine to run at no-load for a fixed
time, so the engine internal temperature can stabilize
before shutting down.
• Set the timer for 1-30 minutes; factory setting is
about 10 minutes.

3.14 SEQUENCE OF OPERATION SETTINGS

SEQUENCE ACTION
—* UTILITY volts available - no action
A* UTILITY voltage drops out
B Line Interrupt Delay Timer Starts
C Line Interrupt Delay Timer Stops
— Engine cranks and starts
D Engine Minimum Run Timer starts
E** Engine Warmup Timer Starts
F STANDBY ON lamp ON
G** Engine Warmup Timer stops
H Is STANDBY voltage good?
J Is STANDBY frequency good?
K Time Delay at NEUTRAL
L Inphase Transfer
— Transfer to STANDBY
M TRANSFER TO STANDBY lamp ON
— STANDBY source powers LOAD
N UTILITY voltage restored
O Return to UTILITY Timer ON
P Timed Delay at NEUTRAL
R Inphase Transfer
S Signal Before Transfer LED lights
— Re-transfer to UTILITY source
T*** Engine Cooldown Timer starts
U*** Engine Cooldown Timer stops
— Engine shuts down
— UTILITY volts available - no action
* 75 - 95% of the Voltage Pickup Sensor setting
** Engine Warmup Timer can be bypassed. See SENSOR AND TIMER ADJUSTMENTS
*** Following re-transfer to UTILITY source, engine shutdown will not occur until both Engine Minimum run and
Engine Cooldown timers have timed out.
12 Generac ® Power Systems, Inc.
Section 3 — Operation
Generac GTS "W" Type Transfer Switch
Units with Inphase Monitor Control Circuit Board
Actual time between re-transfer back to UTILITY and
engine shutdown is whichever is longer of the
Engine Cool Down timer setting or any time remain-
ing on Engine Minimum run timer.
After the switch automatically re-transferred loads back
to the UTILITY power source and generator has shut
down, the system is "armed" for Sequence 1 again.
TIMER/SENSOR
Voltage Dropout Sensor
Voltage Dropout Sensor
Line Interrupt Delay Timer
Line Interrupt Delay Timer
Engine Minimum Run Timer
Engine Warmup Timer
Engine Warmup Timer
Standby Voltage Sensor
Standby Frequency Sensor
Time Delay Neutral Timer
Inphase Transfer Select
Voltage Pickup Sensor
Return to Utility Timer
Time Delay Neutral Timer
Inphase Transfer Select
Signal Before Transfer Timer
Engine Cooldown Timer
Engine Cooldown Timer
NOTE:
ADJUST FACTORY
RANGE SETTING
75 - 95% 90%
75 - 95% 90%
0.1 - 10 seconds 5 seconds
.01 - 10 seconds 5 seconds
5 to 30 minutes 20 minutes
5 sec. - 3 min. 1 minute
5 sec. - 3 min. 1 minute
85 - 95% 90%
80 - 90% 90%
0.1 - 10 seconds 5 seconds
None
85 - 95% 90%
1 - 30 minutes 5 minutes
0.1 - 10 seconds 5 seconds
none 0.1 - 30 seconds
1 - 30 seconds 10 seconds
1 - 30 minutes 10 minutes
1 - 30 minutes 10 minutes