Murphy PVA20 Network Card User Manual


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PVA20, PVA35 and PVAA SERIES Typical Wirings For 12 and 24 VDC
GRND
GRND
V+
V+
RS485 (+) Data
RS485 (+) Data
RS485 (-) Data
RS485 (-) Data
Pin 4
Pin 3
Pin 2
Pin 1
Pin 6
Pin 6
Pin 1
Pin 3
Pin 4
Pin 5
PVA Gage
PV100
Note: Place Resistor between RS485+ and RS485– at end
of Line on last PVA gage (included in PVJR or factory purchased panels).
PowerView Gages Back View
Deutsch DT06-6S Style Connections
BA
4
4
3
3
6
6
1
1
120 ohms
See Note
To Next
PVA gage
V+
GRND
V+
+
–
+
–
V+
GRND
RS485 (+) Data
RS485 (+) Data
RS485 (-) Data
RS485 (-) Data
Pin 1
Pin 1
Pin 6
Pin 3
Pin 4
PVAA
Audible
Alarm
PV100
Note:
Place Resistor between RS485+ and RS485– at end
of Line on last PVA gage (included in PVW-P or factory purchased panels).
PVAA Audible Alarm Back View
Deutsch DT06-6S Style Connections
BA
4
4
3
3
6
6
1
1
5
5
To Next
PVA gage
Optional Alarm
Horn or Power
Relay Coil
Optional
External Alarm
or FWMurphy
Mini-Siren
®
SAH
Battery
Ignition
Switch
V+
120 ohms
See Note
WARNING:
Disconnect battery negative cable before wiring or service. Devices containing solid state components can be damaged or caused to
malfunction when used in systems which incorporate inductive loads (e.g. relays, solenoids, etc.) that can generate voltage spikes. To reduce the
potential for this type of damage, install a fly back or clamping diode across all inductive loads. Use Murphy diode package 65-00-0343 or equivalent.
A typical diode is 1N4005 and is readily available from commercial sources. Failures of this type are not covered by our Limited Warranty.
IMPORTANT:
To eliminate external interference: RS485(+) and RS485(-) should be twisted pair cable or twist wires together, one twist per
inch minimum. (RS485 wire for example: BELDEN 9841 or 3105A).
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