Contents
iii
3-10 DC control power connections ................................................................................................................ 24
3-11 Circuit monitors connected to one set of PTs and one CPT ................................................................ 25
3-12 Deriving L-L control power from phase PT inputs .............................................................................. 27
3-13 Deriving L-N control power from phase PT inputs .............................................................................27
3-14 Grounding the circuit monitor ................................................................................................................ 28
3-15 Circuit monitors connected to a system display for circuit monitors................................................ 29
3-16 POWERLOGIC devices connected directly to a personal computer ................................................. 30
3-17 POWERLOGIC devices connected to an Ethernet gateway ............................................................... 31
3-18 POWERLOGIC devices connected to a PNIM ......................................................................................32
3-19 POWERLOGIC devices connected to a SY/MAX programmable controller................................... 33
3-20 Daisy-chaining the RS-485 communications terminals........................................................................ 35
3-21 Terminator placement when last device on the link is a circuit monitor .......................................... 36
3-22 Multipoint communications adapter connected to PNIM .................................................................. 37
4-1 Choosing a Setup option .......................................................................................................................... 41
4-2 Flowchart for front panel configuration................................................................................................. 44
4-3 Flowchart for performing resets using the Resets option.................................................................... 57
4-4 Alarm/Relay setup.................................................................................................................................... 59
A-1 Circuit monitor dimensions ..................................................................................................................... 71
A-2 Circuit monitor dimensions with Input/Output and Voltage/Power Modules............................. 72
A-3 Circuit monitor with Input/Output Module ........................................................................................ 72
C-1 Installing terminal strip covers ................................................................................................................ 75
TABLES
1-1 Summary of circuit monitor instrumentation ......................................................................................... 3
1-2 Class 3020 circuit monitors......................................................................................................................... 3
1-3 Circuit monitor feature comparison ......................................................................................................... 3
3-1 Typical circuit monitor mounting locations .......................................................................................... 15
3-2 Supported system wiring connections ................................................................................................... 17
3-3 Maximum distances of comms link at different baud rates ................................................................ 34
4-1 Factory defaults for front panel configuration parameters ................................................................. 42
4-2 Supported system type system code selections .................................................................................... 48
4-3 Maximum distances of comms link at varying baud rates ................................................................. 53
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