Specifications

I.B. ATS-I005
Page 29
Effective 6/00
If NO: Trace the voltage from the line termi-
nals to the respective J1 or J2 con-
nector per the associated wiring dia-
gram.
Step 5: Is the nominal voltage (NOMV) and nominal
frequency (NOMF) programmed for the sys-
tem voltage and frequency?
If YES: Proceed to paragraph 6.2 to check
logic for problems.
If NO: Program per the instructions in
Section 5.
6.3.3 MOTOR KEEPS TURNING AND TRANSFER
SWITCH WILL NOT STOP IN POSITION
Step 1: Check the appropriate limit switch (NLS or
ELS). NLS should open with NORMAL
closed and ELS should open with EMER-
GENCY closed.
6.3.4 TRANSFER SWITCH WILL NOT AUTOMATI-
CALLY TRANSFER TO NORMAL
Step 1: Is Option 29 installed? If so, there would be a
pushbutton labeled “Manual Transfer to
Normal.”
If YES: STOP! The transfer switch must be
MANUALLY transferred to NORMAL
by depressing the pushbutton.
If NO: Proceed to Step 2.
Step 2: Is Option 9B installed? If so, there would be
a selector switch labeled “Maintenance.”
If YES: Verify selector switch is in the
“Operate” position.
If NO: Proceed to Step 3.
Step 3: Is the voltage selector plug in the correct
position?
If YES: Proceed to Step 4.
If NO: Position plug correctly.
Step 4: Measure the voltage from J5-22 to J5-5. Is
the voltage measured 120 Vac (+/- 10 volts)?
Record the reading.
If YES: Proceed to Step 5.
If YES: Proceed to Step 5.
If NO: Refer to the appropriate wiring dia-
gram.
Step 5: Measure the voltage from P3-4 to P3-5. Is
the voltage measured 120 Vac (+/- 10 volts)?
Record the reading.
If YES: Check motor and bridge rectifier.
If NO: Contact Cutler-Hammer.
6.3.5 TRANSFER SWITCH WILL NOT AUTOMATI-
CALLY TRANSFER TO EMERGENCY
Step 1: If the alternate source is a generator, is it run-
ning?
If YES: Proceed to Step 2.
If NO: Check the generator and the engine
start contacts (51 and 52).
Step 2: Are the correct line voltage and frequency
available at terminals E1, E2, and E3?
Record the readings.
If YES: Proceed to Step 3.
If NO: Make sure the generator breaker is
closed. Verify there is an output volt-
age from the generator.
Step 3: Is the voltage selector plug in the correct
position?
If YES: Proceed to Step 4.
If NO: Position plug correctly.
Step 4: Is the NORMAL power source available?
If YES: Is a test (Manual or Exercise) being
run?
If YES: STOP! The transfer switch
should not transfer to EMER-
GENCY. The NORMAL
source is preferred.
If NO: Proceed to Step 5.
If NO: Proceed to Step 5.