Allen-Bradley 1391B Series, Instruction Manual

Page: 47 / 82

Start-Up
Chapter 7
7-45
o
3. Assure that preliminary adjustment of the following items has been
performed:
- Potentiometer adjustments as described in Chapter 5.
- S1, S2 and SW1 switch settings as described in Chapter 5.
Important: The above adjustments must be performed before
proceeding.
o
4. Assure that the controller circuit breaker (MCB) OFF.
o
5. Apply power to the transformer, but Do Not enable the controller or
energize the line/DB contactor (M).
o
6. Using a voltmeter, verify that the voltages listed below are present at
the locations shown. The tolerance for all voltages is
±
10%. Clear
faults before replacing any blown fuses.
Location Voltage
TB5-4 to TB5-5 230V AC
TB5-4 to TB5-6 230V AC
TB5-5 to TB5-6 230V AC
TB4-19 to TB4-20 18V AC
TB4-21 to TB4-20 18V AC
TB4-21 to TB4-19 36V AC
TP13 to TP12 +12V DC
TP14 to TP12 –12V DC
o
7. Remove all power to the transformer.
o
8. The wires connected to terminals 9 and 10 of TB2 must be marked
and removed to allow for local operation of the Enable circuit.
Connect a suitable temporary switch between these terminals and
insulate the switch connections. See Figure 7.1.
Figure 7.1
Local Control Connections
Temporary
Local Enable
Switch
Variable
Command
Input
Battery
Box
1391B-ES
Controller
TB2-1
TB2-2
TB2-9
TB2-10
+ –