36 Getting Started Chapter 1
Example: Differential
Divider or Filter
Configuration
Any channel can be configured as a differential divider (with optional filter)
connected to the normally open contact of the Form C relay. The differential
divider requires that two channels be used.
Figure 1-23 shows channel 24 and 25 in this configuration with the optional
filter. For resistors R24 and R25, add a cross-channel capacitor for a
differential filter or add a cross-channel resistor for a differential divider.
No configuration jumpers are required.
Figure 1-23. Example: Differential Divider or Filter Configuration
R
P
2
4
-
3
1
User Supplied Resistor Packs (SIP) Locations
and associated pullup voltage (for optional standup resistors)
Solder Holes
Channel Resistor
Solder Holes
Channel Capacitor
Jumpers
Configuration
Channel
Channel
Number
V
0
-
7
R
P
0
-
7
R
P
8
-
1
5
V
8
-
1
5
R
P
1
6
-
2
3
V
2
4
-
3
1
V
1
6
-
2
3
Module
Terminal
To
Wiring
User
R or C
CH 24
CH 25
NO
NC
COM
NC
NO
NO
COM
NC
COM
NC
NO
COM
R24
Cross-Channel
NC
NO
COM
NC
NO
COM
R25
Add Resistor
Differential Divider:
Add Capacitor
Differential filter:
RC
MODULE
TERMINAL
MODULE
SWITCH
Channel 24
Channel 25