635-SERIES HARDWARE M ANUAL
Chapter-Page
2-32
PART 4.4.2 SETTING THE PASS-THRU VOLTAGE JUMPERS
If you are not using pass-thru voltage and the jumpers (JP1/JP2) are already in the UNSET, then skip this part.
For convenience, the 635 DSI supports Pass-thru voltage from the power input.
The voltage (12v/24v) is passed thru Pin-4 (Pwr Out) of the RS-485 Connectors (J6/J5).
NOTICE:
•
Leave the Jumpers open (factory default) if you are not using pass-thru voltage.
•
Install the Jumpers in the correct positon if you are using pass-thru voltage.
•
Each 485 Section must be configured for pass-thru, independently. It is possible to use pass-thru on one Section
and not on the other Section. Or it is possible to pass 12V on one Section and 24V on the other section.
Table 23: SET THE PASS-THRU JUMPERS FOR EACH SECTION
SECTION
JUMPER Pwr Input(J2) Pin-1
Pwr Input(J2) Pin-3
NO PASS THRU VOLTAGE
Section-1
JP1
Set to “12V” (A)
Set to “24V” (B)
UNSET (factory default) (C)
Section-2
JP2
Set to “12V” (A)
Set to “24V” (B)
UNSET (factory default) (C)
(A)
12V pass-thru from the controller 12V power supply (PIN-1 of Power Input(J2)) to PIN-4 of the RS485 Connectors.
(B)
24V pass-thru from an auxiliary power supply (PIN-3 of Power Input(J2)) to PIN-4 of the RS485 Connectors.
(C)
UNSET means no voltage is passed thru to PIN-4 of the RS485 Connectors.
Figure 22 – Using Pass-thru Jumpers on the 635 DSI Board:
This diagram shows the pass-thru jumpers in the UNSET position.
