•
Operation switch (on/off)
•
Short-circuit and overload protection with test
function
•
Manual reset function
30 Ampere, Fuse-Protected Terminals
•
3-phase power matching incoming mains voltage
for powering auxiliary customer equipment
•
Not available if two manual motor starters are
selected
•
Terminals are off when the incoming power to
the drive is off
•
Power for the fused protected terminals will be
provided from the load side of any supplied
contactor, circuit breaker, or disconnect switch.
24 V DC Power Supply
•
5 amp, 120 W, 24 V DC
•
Protected against output over-current, overload,
short circuits, and over-temperature
•
For powering customer-supplied 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 eight universal input modules plus two dedicated
thermistor input modules. All ten modules are integrated
into the frequency converter’s safe-stop circuit and can be
monitored via a fieldbus network (requires the purchase of
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
Additional features:
•
One universal output, configurable for analog
voltage or analog current
•
Two output relays (N.O.)
•
Dual-line LC display and LED diagnostics
•
Sensor lead wire break, short-circuit, and incorrect
polarity detection
•
Interface setup software
Dedicated thermistor inputs (2)
Features:
•
Each module capable of monitoring up to six
thermistors in series
•
Fault diagnostics for wire breakage or short-
circuits of sensor leads
•
ATEX/UL/CSA certification
•
A third thermistor input can be provided by the
PTC Thermistor Option Card MCB 112, if
necessary
4.6 Electrical Installation
4.6.1 Power Connections
Cabling and Fusing
NOTE
Cables General
All cabling must comply with national and local
regulations on cable cross-sections and ambient
temperature. UL applications require 75° C copper
conductors. 75 and 90° C copper conductors are thermally
acceptable for the frequency converter to use in non UL
applications.
The power cable connections are situated as shown below.
Dimensioning of cable cross section must be done in
accordance with the current ratings and local legislation.
See 8.1.1 Cable Lengths and Cross Sections: for details.
For protection of the frequency converter, the
recommended fuses must be used or the unit must be
with built-in fuses. Recommended fuses can be seen in the
tables of the fuse section. Always ensure that proper fusing
is made according to local regulation.
The mains connection is fitted to the mains switch if this is
included.
3 Phase
power
input
130BA026.10
91 (L1)
92 (L2)
93 (L3)
95 PE
Illustration 4.23
How to Install VLT Automation Low Harmonic Drive Operating Instructions
34 MG34O202 - VLT
®
is a registered Danfoss trademark
44
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