For the correction factors for each temperature, see the instructions of the Underwriters Laboratories UL 61800-5-1.
6.1.5 Fuse Selection
We recommend the fuse type gG/gL (IEC 60269-1). To make a selection of the fuse voltage rating, refer to the mains. Refer also to local
regulations, cable installation conditions, and cable specification. Do not use larger fuses than what is recommended.
Find the recommended fuses in tables in
10.3.1 List of Cable and Fuse Size Information
Make sure that the operation time of the fuse is less than 0.4 s. The operation time agrees with the fuse type and the impedance of the
supply circuit. For more information on faster fuses, speak to the manufacturer. The manufacturer can also recommend some aR (UL
recognized, IEC 60269-4) and gS (IEC 60269-4) fuse ranges.
6.1.6 Fuse Selection, North America
We recommend the fuse class T (UL & CSA). To make a selection of the fuse voltage rating, refer to the mains. Refer also to local
regulations, cable installation conditions, and cable specification. Do not use larger fuses than what is recommended.
Find the recommended fuses in tables in
10.3.1 List of Cable and Fuse Size Information
Make sure that the operation time of the fuse is less than 0.4 s. The operation time agrees with the fuse type and the impedance of the
supply circuit. For more information on faster fuses, speak to the manufacturer. The manufacturer can also recommend some high-
speed Class J (UL & CSA) and aR (UL recognised) fuse ranges.
The solid-state short circuit protection does not supply protection for the branch circuit of the AC drive. To supply the branch circuit
protection, refer to the National Electric Code and the local regulations. Do not use other devices than fuses to supply branch circuit
protection.
6.1.7 Brake Resistor Cables
VACON® 100 wall-mounted drives have terminals for an optional external brake resistor. These terminals are identified with R+ and R-
(in MR4) or DC+/R+ and R- (in MR5, MR6, MR7, MR8, and MR9). Find the dimensions that we recommend for the brake resistor cables in
the tables linked in
10.3.1 List of Cable and Fuse Size Information
. See also the brake resistor ratings in
.
CAUTION
SHOCK HAZARD FROM MULTI-CONDUCTOR CABLES
With a multi-conductor cable, the conductors that are not connected can cause an accidental contact with a conducting
component.
-
If a multi-conductor cable is used, cut off all conductors that are not connected.
The enclosure sizes MR7, MR8, and MR9 have the brake chopper only if their type code has the code +DBIN. The frames MR4, MR5, and
MR6 have the brake chopper as standard.
NOTICE
The VACON
®
100 FLOW and HVAC software do not have the dynamic braking or the brake resistor functions.
Electrical Installation
Operating Guide | VACON® 100 Wall-mounted Drives
AQ298036140958en-000101 / DPD01711| 33
Danfoss A/S © 2019.05
Summary of Contents for VACON 100 flow
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