12 • Technical Data
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Indication Description Remarks
Terminal 22 No connection (optional)
• Standard RS485, half duplex with Modbus protocol,
baud rate 1200, 2400, 4800, 9600 BPS.
Terminal 23 RS-485 communication (-)
(optional)
• Twisted shielded pair should be used.
Connect shield to ground on the PLC/Computer
side.
Terminal 24 RS-485 communication (+)
(optional)
• Terminals 4 & 5 must be wired to Control Supply for
operation in communication mode (refer to section
4.16 page 27 for wiring diagram).
• Up 32 units can be connected for Modbus RS485
communication. For reliable communication, units
should be installed in the vicinity of 200m
maximum, from the first to the last unit.
• Refer to section
7.7.9 page 85 for programming.
• Consult the communication manual (ask factory).
Terminal 25 Programmable Insulation Alarm
Output relay (Common) (optional)
Voltage free 8A, 250VAC, 2000VA max. is energized
when the motor insulation level decreases below the
Insulation Alarm level.
Terminal 26 Programmable Insulation Alarm
Output relay (N.O.) (optional)
The relay is de-energized and the alarm will
disappear if on of the following occurs:
• The insulation level returns to normal for more than
60 seconds
• RVS-DN resets
• Control Supply disconnection
Refer to section
7.7.7 on page 81 for more details.
Terminal 27 Programmable Insulation
Alarm Output relay (N.C.)
(optional)
Notes:
• Do not use External Fault while using Insulation test
option.
• Insulation test can be performed only when main
voltage is not connected to the RVS-DN,
(upstream isolation device must be opened.)
• For correct operation of Insulation test, it is
important that the RVS-DN is properly grounded
and that the control module is properly fastened to
the power section.
• Insulation test option and analog output option can
not be applied together.
• Refer to section
7.7.7 page 81 for insulation test
programming.
Terminal 28 Thermistor input (T1) (optional) Thermistor input is programmable as a PTC or NTC
type thermistor. The trip value is adjustable between
1-10Kohm, preset delay of 2 Sec.
Terminal 29 Thermistor input (T2) (optional) Connect thermistor and/or Analog output shield to
ground terminal.
Terminal 30 Ground (optional) Analog output (0-10VDC or 0-20mA or 4-20mA)
Terminal 31 Analog output (-) (optional) reflects motor current and is related to 2xFLA. i.e.,
Full scale (10VDC or 20mA) is related to 2xFLA.
Terminal 32 Analog output (+) (optional) Note:
In the RVS-DN 1000V & 1200V models the analog
output reflects motor current and is related to
2xFLC.Dip switches allow selection between: 0-
10VDC, 0-20mA or 4-20mA.
• Refer to section
6.7 page 59 for analog output dip
switch setting.
• Refer to section
7.7.8 page 83 for analog output
programming.
• Refer to section
7.7.7 page 81 for thermistor input
programming.
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