Unit features include:
•
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 VDC Power Supply
•
5 amp, 120 W, 24 VDC
•
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 drive’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
3 VLT HVAC Drive Selection
VLT
®
HVAC Drive Design Guide
60
MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
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