APG MNU IS Series, Руководство пользователя

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Modbus System Wiring with RST-6001
Modbus System Wiring

IMPORTANT : Your MNU IS sensor MUST be installed according to drawing 9005002
(Hazardous Installation Drawing) located at the back of the manual to meet listed approv-
als. Faulty installation will invalidate all safety approvals and ratings.
Power
Supply
+8-24 Vdc
GND
Use Shielded Cable
120 Ω terminating resistor
may be necessary for long
cable runs.
V+
B (TX-)
A (TX+)
Sensor 1
GND
V+
B (TX-)
A (TX+)
Sensor 2
GND
V+
B (TX-)
A (TX+)
Sensor 3
GND
Master
Device
RS-485 A (TX+)
RS-485 B (TX-)
MNU IS Sensor MNU IS Sensor MNU IS Sensor
Note: When connecting MNU IS
sensors to your system, reversing
A and B connections may be necessary
if sensors do not communicate with
Modbus Master device.
120 Ω terminating resistor across A & B
terminals of last or only sensor, if necessary.
For installations without IS barriers only.
Wiring T’s must be located on
controller/supply side of IS barriers.
See Hazardous Installation
Drawing for Intrinsically Safe
installation requirements.
Otherwise, wire directly.
See Hazardous Installation
Drawing for Intrinsically Safe
installation requirements.
Otherwise, wire directly.
See Hazardous Installation
Drawing for Intrinsically Safe
installation requirements.
Otherwise, wire directly.
Power
Supply
+8-24 Vdc
GND
Use Shielded Cable
Equivalent 120 Ω
terminating resistor
internal to RST-6001
USB to computer
with APG Modbus
software
RST-6001
Modbus
Controller
V+
B
A
Sensor 1
GND
V+
B
A
Sensor 2
GND
V+
B
A
Sensor 3
GND
A
B
-5V
MNU IS sensor
+5V
MNU IS sensor MNU IS sensor
Note: An indep8-24 Vdc
power supply is required when using
an RST-6001 Modbus Controller. The
RST-6001 can only supply ±5 Vdc, not
the +8-24 Vdc required by the MNU IS.
Wiring T’s must be located on
controller/supply side of IS barriers.
120 Ω terminating resistor across A & B
terminals of last or only sensor, if necessary.
For installations without IS barriers only.
See Hazardous Installation
Drawing for Intrinsically Safe
installation requirements.
Otherwise, wire directly.
See Hazardous Installation
Drawing for Intrinsically Safe
installation requirements.
Otherwise, wire directly.
See Hazardous Installation
Drawing for Intrinsically Safe
installation requirements.
Otherwise, wire directly.