Dwyer 32DZ - Manual (Page 6)

949-1318 Page 6 of 40 June, 2000
Wiring for Optional Inputs and Outputs
Wire power and outputs as shown. Wiring for options is shown below. All wiring
shown below is Class 2. Shielded twisted pair is required for Option 992.
5 6
Option 992: Terminal 5 is line A (-).
Terminal 6 is line B (+).
Last control in chain must have 120 ohm ± 1%
resistor across 5 and 6.
Option 9502: Connect 12 to 24 Volt ac or
dc power to terminals 11 and
12. No polarity.
11 12
The wiring terminals for the 32DZ are compression type. To open
the wiring terminal, turn the screw for that terminal counterclock-
wise. Slide the wire into the terminal space. While holding the wire
in place, turn the screw clockwise to tighten. Maximum torque is
0.424 N·m(3.75 in. lb.). Do not overtighten. The wire should be held
snugly in place.
Control wiring is as shown.
Note: Industry standard designation for
RS-485 lines is A and B. Some equip-
ment manufacturers use a non-standard designation of plus and minus. The
association of A to minus and B to plus is based on a sample of devices marked as
plus and minus and is not intended to represent ALL such labelled devices. Final
responsibility for correct identification of leads and terminals rests with the user/
installer and the manufacturer of the other device(s) installed in the system.