Watlow VPAC-BT Remote Mount Transformer - Manual (Page 2)

Input
Pot (+) (-)
T
ransformer Plug
R22
Zero Cross
SSR
- +
BT
8 7 6 5
4 3 2 1 4 3 2 1
Heater
Safety Contactor
if required
Semiconductor
Fuse
Branch Circuit
Fuses T
ransformer
Fuses
Primary
T
ransformer
Connections
(bottom view)
red
black white black
240 V
olt
120 V
olt
Secondary
T
ransformer
Connections
(top view)
Note: Input is 250 ohms. For 5K input, cut R22.
Common Positive
Pot (+) (-)
Manual Control
L1 L2
12V~(ac) Common (center tap) 12V~(ac)
orange white violet
Note: The controls transformer must be on the same phase as the load. See wiring diagram.
All
hot lines to the transformer should be fused at 1 amp with the proper line voltage. For manual control, a 1K
Ω
potentiometer may be connected to the
A
T
card input terminals.
W
a
tlow offers a Manual Control
Kit, P/N 08-5362. Using this potentiometer requires removing the 5K
Ω
, R2 resistor for higher
impedance. Bias and gain adjustment is required when changing from 4- 20mA
input to a manual control
input or a voltage input.
W
iring Diagram for VP
AC-BT
Remote Mount T
ransformer