GEYA Delay On Single Function Time Relay GRT8-A1 Instruction Manual

Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the GEYA GRT8-A1 Delay On Single Function Time Relay. Please read thoroughly before use to ensure safe and correct operation.

Product Features

High Performance: Delay can be set directly via the panel knob for convenient and intuitive adjustment.
Function Modes: Features two optional modes: A (Delay ON) or B (Delay OFF).
Operating Principle: Function is controlled by supply voltage or time scale control input. Time scale ranges from 0.1s to 10 days, divided into 10 ranges (0.1-1s, 1-10s, 6-60s, 1-10min, 6-60min, 1-10hr, 0.1-1day, 1-10day, only ON, only OFF).
Wide Voltage Support: Compatible with AC/DC12-240V or AC230V.
Output Contact: Available with 1SPDT (1NO1NC) or 2SPDT (2NO2NC) output contacts. Relay status is indicated by an LED.
Compact Design: 1-MODULE, DIN rail mounting. Ultra-small size, only 18mm width, designed for 35mm rail mounting.

Installation and Dimensions

The GRT8-A1 relay is designed for easy installation on a standard DIN rail. Its compact dimensions ensure it fits efficiently into electrical panels.

GEYA GRT8-A1 relay dimensions: 18mm width, 90mm length, 64mm height, designed for standard DIN rail installation. — Figure 1: GEYA GRT8-A1 relay dimensions and DIN rail mounting. The unit measures 18mm in width, 90mm in length, and 64mm in height, indicating its suitability for standard electrical enclosures.

Function Modes

The GRT8-A1 series offers two primary function modes: Delay ON (A) and Delay OFF (B), selectable via the front panel.

A - Delay ON

In Delay ON mode, the relay initiates a timed delay upon power-up. After the set delay period, the output contact closes, activating the connected load. The load remains active until power is removed.

Diagram illustrating Delay ON (A) and Delay OFF (B) functions for GEYA GRT8-A1 and GRT8-A2 relays. Shows examples of how a light turns on after a delay in 'Delay ON' mode and turns off after a delay in 'Delay OFF' mode. — Figure 2: Illustration of Delay ON (A) and Delay OFF (B) function modes. For Delay ON, a light turns on after a set delay (e.g., 10 seconds) following power-up. For Delay OFF, a light turns on immediately and then turns off after a set delay (e.g., 10 seconds).

B - Delay OFF

In Delay OFF mode, the connected load is immediately activated upon power-up. After the set delay period, the output contact opens, deactivating the load. This mode is suitable for applications where a device needs to run for a specific duration after being switched on.

Wiring Diagram

Proper wiring is crucial for safe and correct operation. Refer to the diagrams below for connection details. Always ensure power is disconnected before performing any wiring.

Detailed technical parameter diagram for GEYA GRT8-A1 and GRT8-A2 relays, showing trigger terminal (A1, S, A2), supply terminal (Un), LED indications (Green for Supply, Red for Output), 10 time range selection, time percentage setting, model numbers, and output types (1SPDT for GRT8-A1, 2SPDT for GRT8-A2). — Figure 3: Technical parameter and terminal identification for GRT8-A1 and GRT8-A2. A1 and A2 are supply terminals, S is the trigger terminal. Green LED indicates power (Un), Red LED indicates output (R). Knobs are for time range and percentage setting. Output contacts are 1SPDT for GRT8-A1 and 2SPDT for GRT8-A2.

Wiring diagrams for GEYA GRT8-A1/B1 (1SPDT) and GRT8-A2/B2 (2SPDT) relays, showing connections for Un, S, A1, A2, and output terminals 15, 16, 18 (for 1SPDT) and 15, 16, 18, 25, 26, 28 (for 2SPDT). Also includes a side view with dimensions. — Figure 4: Detailed wiring diagrams for GRT8-A1/B1 and GRT8-A2/B2 models, illustrating connections for power input, trigger, and output contacts. Includes a side view with overall dimensions.

Relay Wiring Example (Delay ON)

This example demonstrates wiring for a Delay ON function to control a lamp using the GRT8-A1 AC230V model. Connect the Live (L) and Neutral (N) lines to the relay's power input (A1, A2). The trigger can be connected to the S terminal. The lamp is connected to the output contacts (15, 18) to receive power after the delay.

Wiring example for GEYA GRT8-A1 AC230V Delay On relay, showing connections for Live (L), Neutral (N), a trigger switch, and a lamp. The relay is wired to delay power to the lamp. — Figure 5: Example wiring for a GRT8-A1 Delay ON relay controlling a lamp. Live and Neutral lines are connected to A1 and A2 respectively. A trigger switch is connected to S. The lamp is connected to the output terminals 15 and 18.

Wiring Demonstration Video

Video 1: This video demonstrates the wiring process for the GEYA GRT8-A1 time relay, showing how to connect power, load, and trigger for proper function. It also covers function demonstration and time setting.

Time Setting

The delay time is set using two rotary knobs on the front panel of the relay. These knobs allow for precise adjustment of the delay period.

Diagram showing how to set time on the GEYA GRT8-A1 relay using two knobs: one for time range (e.g., 10s, 1m, 1h, 1d) and another for percentage (10% to 100%). Includes an example for setting 5 minutes and 15 minutes. — Figure 6: Guide on how to set the delay time. The upper knob selects the time range (e.g., seconds, minutes, hours, days), and the lower knob adjusts the percentage within that range. For example, 5 minutes is set by selecting '10m' and 50%.

Setting Procedure

The upper knob (Knob 1) selects the time range. Options include 0.1-1s, 1-10s, 6-60s, 1-10min, 6-60min, 1-10hr, 0.1-1day, 1-10day, only ON, and only OFF.
The lower knob (Knob 2) sets the percentage of the selected time range, adjustable from 10% to 100%.

Example: To set a 5-second delay, first rotate the upper knob to the "10s" range. Then, adjust the lower knob to "50%". This calculates to 50% of 10 seconds, which is 5 seconds.

Time Setting Demonstration Video

Video 2: This video introduces how to use the GEYA GRT8-A1 time relay, including setting the delay time and demonstrating its operation with a load.

Technical Specifications

Below are the detailed technical specifications for the GEYA GRT8-A1 Delay On Single Function Time Relay.

Table of technical parameters for GEYA GRT8-A1 and GRT8-A2 relays, including function, supply terminals, voltage range, burden, power input, supply voltage tolerance, supply indication, time ranges, time setting, time deviation, repeat accuracy, temperature coefficient, output, current rating, switching voltage, min. breaking capacity DC, output indication, mechanical life, electrical life, reset time, operating temperature, storage temperature, mounting/DIN rail, protection degree, operating position, overvoltage category, pollution degree, max. cable size, dimensions, and standards. — Figure 7: Comprehensive table of technical specifications for the GRT8-A1 and GRT8-A2 models, detailing electrical, environmental, and mechanical characteristics.

Specification	Value
Contact Type	Normally Open, Normally Closed
Current Rating	16 Amps
Mounting Type	DIN Rail Mount
Operation Mode	Automatic
Coil Voltage	12 Volts (DC)
Contact Current Rating	16 Amps
Maximum Switching Current	16 Amps
Maximum Switching Voltage	240 Volts
Number of Terminals	2
Specification Met	Din

Troubleshooting

Relay not activating: Check power supply connections (A1, A2). Ensure the voltage is within the specified range (AC/DC12-240V or AC230V). Verify time settings are correctly configured and the delay period has elapsed.
Load not switching: Inspect output contact wiring (15, 16, 18). Confirm the load is correctly connected to the appropriate normally open (NO) or normally closed (NC) terminals. Check the load's power requirements against the relay's maximum switching current (16 Amps).
Incorrect delay time: Re-verify the settings on both time range and percentage knobs. Ensure the screwdriver is properly seated when adjusting to avoid damage.
LED indicators: Green LED (Un) indicates power supply. Red LED (R) indicates relay output status. If the green LED is off, check the power supply. If the red LED does not change state as expected, review wiring and time settings.

Warranty and Support

For warranty information, technical assistance, or further inquiries, please contact GEYA customer support through their official channels or refer to the product packaging. Keep your purchase receipt for warranty claims.

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GEYA GRT8-A1