Installation
MCD
Remote
Operator
MG.17.E5.02 - VLT
®
is a registered Danfoss trademark
2
2.
Installation
This section describes how to install the Remote Operator for basic control and monitoring of a soft
starter. The Remote Operator is pre-configured to control a soft starter once control supply power is
applied to both devices. For basic operation, no parameter adjustments are required on the Remote
Operator or the soft starter.
In order to use the Remote Operator's 4-20 mA analog output to monitor motor current, follow the
instructions in the section 4-20 mA Analog Output.
2.1.
Mounting
The Remote Operator is rated IP54 or NEMA 12 when mounted correctly in accordance with these
instructions. It is intended for use on the flat surface of a panel, with all external wiring connected from
behind the panel.
The Remote Operator is supplied with a mounting bracket and four fasteners. The built-in gasket seal
guarantees protection from outside the panel.
Select the panel location of the Remote Operator. The required panel cutout is 92 mm x 92 mm. Place
the Remote Operator through the cutout and locate the mounting bracket at the rear of the panel onto
the four studs. Use the four fasteners to tighten the mounting bracket up to the rear of the panel.
For use on a flat surface of a NEMA 1 or NEMA 12 enclosure.
177HA3
74.
11
Fasteners (x 4)
Mounting bracket
Universal panel cutout
(92 mm x 92 mm)
Remote Operator
2.2.
Connection
The Remote Operator requires a minimum of three electrical connections - the external power supply,
the chassis earth and the RS485 Starter port. All external wiring, except the chassis earth (M4 stud
provided), is connected to spring operated clamp connector terminals with a maximum wire size of
2.5 mm
2
. No special tools are required.
Once the Remote Operator is mounted, connect it to the starter as illustrated.
2.3.
Grounding and Shielding
Twisted pair data cable with earth shield is recommended. The cable shield should be connected to the
GND device terminal at both ends and one point of the site protective earth.
2.4.
Termination Resistors
In long cable runs prone to excessive noise interference, termination resistors should be installed
between the data lines at both ends of the RS485 cable. This resistance should match the cable
impedance (typically 120
Ω
). Do not use wire wound resistors.
