30 A, fuse-protected terminals
•
3-phase power matching incoming mains voltage
for powering auxiliary customer equipment.
•
Not available if 2 manual motor starters are
selected.
•
Terminals are o when the incoming power to
the frequency converter is o.
•
Power for the fused protected terminals is
provided from the load side of any supplied
circuit breaker or disconnect switch.
24 V DC supply
•
5 A, 120 W, 24 V DC.
•
Protected against output overcurrent, overload,
short circuits, and overtemperature.
•
For powering 3
rd
party accessory devices such as
sensors, PLC I/O, contactors, temperature probes,
indicator lights, and/or other electronic hardware.
•
Diagnostics include a dry DC-ok contact, a green
DC-ok LED, and a red overload LED.
External temperature monitoring
Designed for monitoring temperatures of external system
components, such as the motor windings and/or bearings.
Includes 8 universal input modules plus 2 dedicated
thermistor input modules. All 10 modules are integrated
into the frequency converter’s STO circuit and can be
monitored via a eldbus network (requires a separate
module/bus coupler).
Universal inputs (8) – signal types
•
RTD inputs (including Pt100), 3-wire, or 4-wire.
•
Thermocouple.
•
Analog current or analog voltage.
Extra features:
•
1 universal output, congurable for analog
voltage, or analog current.
•
2 output relays (NO).
•
Dual-line LC display and LED diagnostics.
•
Sensor lead wire break, short circuit, and incorrect
polarity detection.
•
Interface set-up software.
Dedicated thermistor inputs (2) – features
NOTICE
If the frequency converter is connected to a thermistor,
the thermistor control wires must be reinforced/double
insulated for PELV isolation. A 24 V DC supply for the
thermistor power is recommended.
•
Each module can monitor up to 6 thermistors in
series.
•
Fault diagnostics for wire breakage or short
circuits of sensor leads.
•
ATEX/UL/CSA certication.
•
A third thermistor input can be provided by the
VLT
®
PTC Thermistor Card MCB 112, if necessary.
3.4 Electrical Installation
See chapter 2 Safety Instructions for general safety
instructions.
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to perform installation, start-up, and maintenance
by qualied personnel can result in death or serious
injury.
•
Only qualied personnel must perform instal-
lation, start-up, and maintenance.
WARNING
INDUCED VOLTAGE
Induced voltage from output motor cables from dierent
frequency converters that are run together can charge
equipment capacitors even with the equipment turned
o and locked out. Failure to run output motor cables
separately or use shielded cables could result in death or
serious injury.
•
Run output motor cables separately, or
•
Use shielded cables.
•
Simultaneously lock out all the frequency
converters.
WARNING
SHOCK HAZARD
The frequency converter can cause a DC current in the
PE conductor and thus result in death or serious injury.
•
When a residual current-operated protective
device (RCD) is used for protection against
electrical shock, only an RCD of Type B is
permitted on the supply side.
Failure to follow the recommendation means that the
RCD cannot provide the intended protection.
Overcurrent protection
•
Extra protective equipment such as short-circuit
protection or motor thermal protection between
frequency converter and motor is required for
applications with multiple motors.
•
Input fusing is required to provide short circuit
and overcurrent protection. If fuses are not
factory-supplied, the installer must provide them.
See maximum fuse ratings in chapter 3.4.13 Fuses.
How to Install Operating Instructions
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