Connecting VT-RM series Redundancy Modules

Models

Two models available:

VT-RM-9-12 / Redundancy module 9V 12V DC

VT-RM-24-48 / Redundancy module 9V 12V DC

VT-RM-9-12 / Redundancy module 9V 12V DC

VT-RM-24-48 / Redundancy module 9V 12V DC

 

Description

1.

PWR1 - LED problem indicator for the power of PSU1

PWR2 - LED problem indicator for the power of PSU2

FUSE1 - LED problem indicator for fuse PSU1

FUSE2 - LED problem indicator for fuse PSU2

2. Output

3a. IN1 - Input for the power supply unit 1 (PSU1)

3b. IN2 - Input for the power supply unit 2 (PSU2)

4. ERR - Error LED indicates device problems.

Dimensions

Description and Technical description

See product page VT-RM-9-12, VT-RM-24-48

General function

The following diagram depicts general usage for VT-RM series

VT-RM-9-12

VT-RT-24-48

VT-RM-9-12

VT-RT-24-48

 

 

Components

The sensor consists of

  • DIN rail 2M plastic housing: flammability rating is UL94V-0; body color is grey; the material is ABS

  • AC voltage meter board

 

Safety instructions

Carefully READ and FOLLOW the safety precautions outlined below BEFORE working with the voltmeter.

  • Only qualified electrical workers should install this equipment. Such work should be performed only after reading this entire set of instructions.

  • NEVER work alone.

  • Before performing visual inspections, tests, or maintenance on this equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of back feeding.

  • Turn off all power supplying the voltmeter and the equipment in which it is installed before working on it.

  • Always use a properly rated voltage sensing device to confirm that all power is off.

  • Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. In the USA, see NFPA 70E

  • Before closing all covers and doors, carefully inspect the work area for tools and objects that may have been left inside the equipment.

  • Use caution while removing or installing panels so that they do not extend into the energized bus; avoid handling the panels, which could cause personal injury.

  • The successful operation of this equipment depends upon proper handling, installation, and operation. Neglecting fundamental installation requirements may lead to a personal injury as well as damage to electrical equipment or other property.

  • The power meter should be installed in a suitable electrical and fire enclosure.

Mounting

1

The device is mounted on to a DIN rail 35mm bar.

1

The device is mounted on to a DIN rail 35mm bar.

2

Insert the wall clip / DIN rail clip into the enclosure.

3

Insert / press in the enclosure on to the DIN rail bar.

4

In case You need to unmount it, pull the wall clip / DIN rail guard with the screwdriver and pull the enclosure outwards.

Wiring

1

Switch OFF the power of the AC line and follow other instructions from the section "Safety instructions".

1

Switch OFF the power of the AC line and follow other instructions from the section "Safety instructions".

2

Follow power cable specifications for the next step.

 

ip length

Wire cross-section

Screw head

Pitch

Torque

Number of contacts

 

 

ip length

Wire cross-section

Screw head

Pitch

Torque

Number of contacts

 

 

 

 

 

 

Terminal block

        

6 - 7 mm,

0.23 - 0.27 in

26~12 AWG 2.5mm ² (including ferrule)

Flat

3.5 mm, 0.13 in

5.08 mm,

0.2 in

0.5Nm,

4.5lb-in

2P

 

3. Insert the power cables.

Warning! Make sure You follow "Safety instructions" at the beginning of the instruction.

Technical support

The device does not contain any user-serviceable parts. If the device requires service, contact your local sales representative. Do not open the device. Opening the device voids the warranty.

Troubleshooting

The following table describes potential problems and their possible causes. It also describes checks you can perform or possible solutions for each. After referring to this table, if you cannot resolve the problem, contact your local Vutlan sales representative for assistance.

Potential Problem

Possible Cause

Possible Solution

Potential Problem

Possible Cause

Possible Solution

Error LED is ON

 

 

 

 

 

 

FUSE LED is ON

Power supply unit has no current

 

Fuse is damaged

 

PRW (Power) LED is ON

PSU’s input supply is not within regulation

Change power supply (PSU) according to VT-RM specifications. For example,