Clipsal 31/2031VETR3 3 Wire Electronic Time Delay Switch

Product Overview

The Clipsal 31/2031VETR3 is a push button electronic time delay switch with remote control and override off facilities. It is designed to control both incandescent and fluorescent lighting, potentially preventing them from being left on unnecessarily. Significant energy savings can result when used for applications such as staircases, hallways, and classrooms.

Features

• State of the art microprocessor design
• Time setting selection from 10 seconds to 15 hours
• High timing accuracy (0.5%)
• Micro switch configurable indicator function: on when contact closed or on when contact open
• Micro switch selectable modes: contact open during timing or contact closed during timing
• 10A rating for standard resistive, inductive or fluorescent loads

Operation

Push Button Control

The built-in or remote push button has the following functions:

• Pressing the button when the timer is passive initiates timing and sets the load and indicator to the active state, according to the configuration switch settings.
• Pressing the button during timing cancels timing and sets the load and indicator to the passive state, according to the configuration switch settings.

To start the timer at any stage, switch the unit to 'OFF' and then to 'ON'.

Indicator Function

The built-in light indicator shows the status of the load. It can be configured via the micro switch to be on when the contact is either open or closed.

Relay Output

The relay contact can be configured by the micro switch to be closed during timing (normally open) or open during timing (normally closed). The contact is always open when the supply is turned off, irrespective of the configuration.

Setting the Timer

Warning: For safety reasons, setup should be performed with the timer isolated from the mains supply.

The timer setting is achieved using an 8-way micro switch, accessible from the back of the unit through a window in the enclosure. The functions of the individual switches are as follows:

Micro Switch Configuration

The 8-way micro switch block includes switches for setting the time delay, configuring the contact state, and setting the indicator state. Switches labeled 'NO' and 'NC' (or similar) control the contact function. Switches 'R1' and 'R2' determine the range multiplier, affecting the time setting step. Switches '8', '4', '2', and '1' are used to set the specific time delay value within the selected range. When a time setting switch is in the 'ON' position, its associated time delay value is added to the total time delay. This sum is then multiplied by the range multiplier.

Range Selection Table

Contact Function Setting

If the switch marked 'CONTACT FUNCTION' is in the 'ON' position (normally open), the contact closes during timing. If it is in the 'NC' position (normally closed), the contact opens during timing.

Indicator Function Setting

When the 'INDICATOR STATE' switch is in the 'ON' position, the indicator is configured to be on when the contact is closed. When the 'INDICATOR STATE' switch is in the 'OFF' position, the indicator is on when the contact is open.

Setting Examples

Example 1: 6 Minute Delay, Normally Open Contact, Indicator On When Closed

• Required time delay is 6 minutes.
• Contact must close during timing.
• Indicator is on when contact is closed.

Time Delay Setting: Initially set all 'TIME SETTING' switches to 'OFF'. Select the timing range where 'MAXIMUM SETTING' is higher than the required time delay (Range 2, 15-minute max setting). Set R1 to 'ON' and R2 to 'OFF' for a 1-minute multiplier. To achieve 6 minutes: set switch 4 to 'ON' (4 minutes). Remaining time needed is 2 minutes. Set switch 2 to 'ON' (2 minutes). Total time = (4 + 2) x 1 minute multiplier = 6 minutes.

Contact Function Setting: Set the 'CONTACT FUNCTION' micro switch to 'NO' for normally open contact (closes during timing).

Indicator Function Setting: Set the 'INDICATOR STATE' micro switch to 'ON' for the indicator to be on when the contact is closed.

[Micro Switch Settings for Example 1: Contact Function=NO, R1=ON, R2=OFF, Time Switches=8(OFF), 4(ON), 2(ON), 1(OFF)]

Example 2: 10 Hour Delay, Normally Closed Contact, Indicator On When Open

• Required time delay is 10 hours.
• Required contact function is normally closed.
• Indicator is on when contact is open.

Time Delay Setting: Select Range 4 (R1=ON, R2=ON) for a 1-hour multiplier. To achieve a 10-hour delay, set the time setting switches to sum to 10. For instance, set micro switches 8 and 2 to 'ON', and switches 4 and 1 to 'OFF'. Total time = (8 + 2) x 1 hour multiplier = 10 hours.

Contact Function Setting: Set the 'CONTACT FUNCTION' micro switch to 'NC' for normally closed contact (opens during timing).

Indicator Function Setting: Set the 'INDICATOR STATE' micro switch to 'OFF' so that the indicator is on when the contact is open.

[Micro Switch Settings for Example 2: Contact Function=NC, R1=ON, R2=ON, Time Switches=8(ON), 4(OFF), 2(ON), 1(OFF)]

Terminals

Four terminals are provided with the following functions:

• T1 - NEUTRAL: Connect to the Neutral potential.
• T2 - REMOTE: Connect a remote push button switch between this terminal and Neutral.
• T3 - LINE: Connect to the Line (Active) potential.
• T4 - LOAD: Connect the load between this terminal and the Neutral.

Wiring Diagram

The wiring diagram illustrates the connection of the 31/2031VETR3 unit. It shows the LINE and NEUTRAL supply connected to the unit. The LOAD is connected from Terminal T4 to NEUTRAL. A REMOTE CONTROL PUSH BUTTON is connected between Terminal T2 and NEUTRAL.

[Diagram Description: The diagram shows the 31/2031VETR3 unit with terminals labeled T1 (NEUTRAL), T2 (REMOTE), T3 (LINE), and T4 (LOAD). LINE is connected to T3, and NEUTRAL is connected to T1. The LOAD is connected between T4 and NEUTRAL. A remote push button is shown connected between T2 and NEUTRAL.]

Remote Operation

The remote switch wiring must be rated for 240V a.c. The total length of cables used for remote switches must not exceed 100m. Either a normally open or normally closed momentary action switch can be used. If multiple remote controls are required, a normally open switch type must be used. When a normally closed momentary switch is used for remote operation, the timer enters the active (timing) state on power-up and times out as per the configuration.

Specifications

Complies to relevant Australian EMC requirements.

^*The timer accuracy is dependent on the accuracy of the supply voltage frequency.