Install and Wire, Chapter 2
7
WATLOW Series 965 User's Manual
Power Wiring
Ó
WARNING:
To avoid potential
electric shock, use
National Electric
Code (NEC) safety
practices when
wiring and connect-
ing this unit to a
power source and to
electrical sensors or
peripheral devices.
NOTE:
Taking the unit out
of the case is not a
normal operating
condition and
should only be done
by a qualified
maintenance
installation techni-
cian. Power to the
case should be
disconnected before
removing or install-
ing the controller
into its case.
Figure 7 -
Low Voltage
Power Wiring
Figure 6 -
High Voltage
Power Wiring
How to Wire the Series 965
The Series 965 wiring is illustrated by model number option. Check the unit
sticker on the control and compare your model number to those shown here
and also the model number breakdown in the Appendix of this manual.
All outputs are referenced to a de-energized state. The final wiring figure is a
typical system example.
When you apply power without sensor inputs on the terminal strip, the Series
965 displays
[----]
in the upper display, and a
[```0]
in the lower display,
except for 0-5V
Î
(dc) or 4-20mA process input units. Press the A/M key twice,
and
[ER`7]
is displayed for one second. This error indicates an open sensor or
A/D error. Remove power to the control and connect the sensor properly, see
pages 8 and 9. All wiring and fusing must conform to the National Electric Code
and to any locally applicable codes as well.
Low Voltage
Model #
965A - 3 1 - 00
.
Ó
WARNING:
If high voltage is
applied to the low
voltage unit,
irreversible damage
will occur.
12-24V
‡
(ac/dc)
High Voltage
Model #
965A - 3 0 - 00
.
100 to 240 V
Å
(ac),
nominal
(85 to 264 actual)
Ó
