Emerson 7000 User Manual

 

381333-395 

                                                           Troubleshooting  3-1

 

 

 

 

 

Hazardous voltage capable of causing shock, 
burns, or death is used in the switch. Do not 
touch the power or load terminal of the transfer 
switch! 
 

Gen-Set does not start 
when the Transfer 
Control switch is turned 
and held in Transfer Test 
position or when the 
normal source fails. 

Hold Transfer Test switch 15 
seconds or the outage must 
be long enough to allow for 
Feature 1C time delay plus 
engine cranking and starting 
time. 

Starting control must be in 
the automatic position. 
Batteries must be charged 
and connected. Check 
wiring to engine starting 
contacts on customer 
terminal block TB. Verify on 
the controller that small 
plug J3 is connected to 
receptacle P3. 

 

Transfer switch does not 
transfer the load to the 
emergency source after 
the engine-generator set 
starts. 

Wait for Feature 2B time 
delay to time out (if used). 

Generator output circuit 
breaker must be closed. 
Generator frequency must 
be at least 95% of nominal 
(57 Hz for a 60 Hz system.) 

Emergency 
voltage on 
controller display 
should read at 
least 90% of 
nominal phase to 
phase voltage. 

Transfer switch does not 
transfer the load to normal 
source when normal 
returns or when the 
Transfer Control switch is 
released. 

Wait for Feature 3A time 
delay to time out (if used). 

 

Normal voltage on 
controller display 
should read at 
least 90% of 
nominal phase to 
phase voltage. 

Engine-generator set does 
not stop after load 
retransfer to the normal 
source. 

Wait for Feature 2E time 
delay to time out (if used). 

Starting control must be in 
the automatic position. 

 

Circuit breaker trips (on an 
ATS without protective 
relay) 

Check the controller display for error messages and determine the cause of the 
trip. After the fault is cleared, turn the Breaker Control switch to CLOSE.  Press 
the Alarm Reset button. 
The CB should close. 

Circuit breaker trips (on an 
ATS with a protective 
relay) 

Check the protective relay and determine the cause of the trip (refer to device’s 
instructions). After fault is cleared, reset the protective relay.  Then reset the 
Lock-Out Relay by turning it to RESET.  Next turn the Breaker Control switch to 
CLOSE.  Press the Alarm Reset button. 
The CB should close. 

 

Refer to the Group 5 Controller User’s Guide 
381333-126 for ATS status display messages, time 
delays, pickup & dropout settings, & adjustments. 

   DANGER