TREND 2VID/24 volt ac Dual Voltage to Current Driver Module

In this Article we are going to Discuss TREND 2VID/24 volt ac Dual Voltage to Current Driver Module (24   Volt ac/dc) relay overview.

TREND 2VID/24v Relay

Features:

• The Voltage to Current Driver is a two channel output interface which converts two 0 to 10 Volt signals into two 0 to 20 milliamps outputs.

• It can act as an interface between an IQ controller and any device requiring 0 to 20 milliamps inputs.

• There are manual override links for each output which can select AUTO, ON (20 milliamps), or OFF (0 milliamps), and can be used to aid commissioning.

• Field wiring is facilitated by rising cage clamp type terminals.

• 4 to 20 milliamps can be achieved by controller strategy.

 

FUNCTIONALITY

The 2 V I D converts two 0 to 10 Volt voltage channels into two 0 to 20 milliamps current channels.

 

Mounting: 

• The 2 VID is designed to be mounted on a standard DIN rail.

 

Power connection: 

• The interface’s power connection is made to a 24 Volt dc (example : IQ’s auxiliary supply) or 24 Volt ac supply (isolated or earthed to IQ earth) using the 0 Volt and 24 Volt connections.

AUTO ON , OFF: 

• For commissioning purposes each channel may be switched ON (20 milliamps), OFF (0 milliamps), or back to Auto (controlled by its input) using its AUTO ON , OFF link.

• The ON , OFF override positions only work if the appropriate input is disconnected.

• Each AUTO ON , OFF link can be replaced by a SPDT (Single Pole Double Throw) switch.

 

Connections: 

• One part screw terminals for 0.5 to 2.5 mm2 cross section area (20 to 14 AWG) cable are used for inputs, outputs, and power connection. 

• All terminals are rising cage clamp type. Each AUTO ON , OFF link may be replaced by a 4 in line connector for connection of a switch

 

Mechanical Design:

Dimensions      : Height 82 mm (3.23”) , width 45 mm (1.77”) , depth 50 mm (1.97”).

Connectors  : Single part with rising cage clamp terminals for 0.5 to 2.5 mm2 cross section area (20 to 14 A W G) cable.

DIN rail  : Top hat profile (DIN 46277-3, EN50022, BS5584:1978)

 

Technical Specification :

Supply Voltage :    24 Volt dc or Volt ac ± 20 %. Supply current

24 Volt ac         :    135 milliamps 

24 Volt dc        :    55 milliamps

Input signal      :    0 to 10 Volt dc (less than 1 milliamps per channel).

Output signal   :    0 to 20 milliamps. Input and output

Conversion      :    ± 5 % accuracy.

Output load      :    0 to 600 ohm

Manual override   : linkable AUTO ON , OFF.

 

INSTALLATION:

• The 2 VID should be mounted in a protective case close to the IQ controller.

• The procedure involves:

• Mount the 2VID in position Set AUTO ON , OFF links Set IQ analogue output channel for voltage Wire the 2 V I D to the controller Wire the 2 VID to the HVAC equipment Connect the 24 V supply Check interface operation

DISPOSAL

RECYCLING : 

All plastic and metal parts are recyclable. The printed circuit board may be sent to any PCB recovery contractor to recover some of the components for any metals such as gold and silver.

 

 

ENVIRONMENT CONDITION :

Safety  : EN61010.

Ambient limits

Storage :-10 °C (14 °F) to +70 °C (158 °F)

Operating :-10 °C (14 °F) to +50 °C (122 °F)

 

Video Link's :

1. TREND 3RM 24 V ac Three Relay Module Overview with Program

2. TREND SRMV & SRMAC Single Relay Module