Danfoss vlt aqua Design Guide

Do not combine low voltage parts and PELV systems.
3.6.8 24 V Back-up Option MCB 107 (Option D)
External 24 V DC Supply
An external 24 V DC supply can be installed for low-voltage supply to the
control card and any option card installed. This enables full operation of
the LCP (including the parameter setting) and serial communication bus-
ses without line power supplied to the power section.
External 24 V DC supply specification:
Input voltage range 24 V DC ±15% (max. 37 V in 10 s)
Max. input current 2.2 A
Average input current for the adjustable frequency drive 0.9 A
Max cable length 246 ft [75 m]
Input capacitance load < 10 uF
Power-up delay < 0.6 s
The inputs are protected.
Terminal numbers:
Terminal 35: - external 24 V DC supply.
Terminal 36: + external 24 V DC supply.
Follow these steps:
1. Remove the LCP or blind cover
2. Remove the Terminal Cover
3. Remove the cable de-coupling plate and the plastic cover un-
derneath
4. Insert the 24 V DC back-up external supply option in the option
slot
5. Mount the cable de-coupling plate
6. Attach the terminal cover and the LCP or blind cover.
When the MCB 107, 24 V back-up option is supplying the control circuit,
the internal 24 V supply is automatically disconnected.
3 VLT AQUA Selection VLT
®
AQUA Drive Design Guide
3-36 MG.20.N5.22 - VLT
®
is a registered Danfoss trademark
3

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled