12
Field Wiring to DC Loop Communications Channels,
Continued
Figure 7. Class A Style 6 Wiring
Figure 8. Class B Style 4 Wiring
Notes:
1. Maximum cable capacitance of 0.27uF or 126 Ohms total line pair resistance, whichever comes
first.
2. DC Loop Communications maximum voltage 30Vdc, maximum short circuit current 150mA.
3. DC Loop data rate 1200 or 4800 baud.
4. Communications lines must use twisted shielded wiring when run in the same conduit as other
circuits. DC inductive loads greater than 5A are not permitted in the same conduit.
5. Refer to drawing #900-036 for additional details regarding 2120 field wiring.
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Summary of Contents for 4100-6065
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