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Top Products
Getting Started 33Chapter 1
Example: Normally
Closed Terminal Pullup
Configuration
Any channel can be configured as a pullup (or pulldown) resistor connected
to any of the contacts of the Form C relay. Figure 1-20 shows channel 25
with the pullup attached to the NC contact. For this example, SIP resistor
pack RP24-31 is to be added. Set two configuration jumpers as shown in
Figure 1-20 (PU NC).
Figure 1-20. Example: Normally Closed Terminal Pullup Configuration
TERMINAL
MODULE
SWITCH
MODULE
Channel 25
RP
24-31
NO
NC
COM
Vpullup
NO
COM
NC
V24-31
User Supplied Resistor Packs (SIP) Locations
and associated pullup voltage (for optional standup resistors)
V
8
-
1
5
R
P
0
-
7
V
0
-
7
R
P
8
-
1
5
V
1
6
-
2
3
V
2
4
-
3
1
R
P
2
4
-
3
1
R
P
1
6
-
2
3
Configuration
Jumpers
Channel
Channel Resistor
Channel Capacitor
Solder Holes
Solder Holes
Channel
Number
Module
Terminal
To
Wiring
User
Pullup
Voltage
NO
NC
COM