GEYA GRI8 Series Current Monitoring Relay Instruction Manual

1. Bubuka

The GEYA GRI8 Series Current Monitoring Relay is designed for reliable monitoring of current flow in various electrical systems. This device is essential for protecting equipment from both overcurrent and undercurrent conditions, ensuring stable operation and preventing damage. It is suitable for applications such as monitoring heating in rail-switches, heating cables, and the consumption of single-phase motors.

The GRI8 series offers different models for specific monitoring needs:

• GRI8-01: Perlindungan arus leuwih
• GRI8-02: Undercurrent Protection
• GRI8-03: Overcurrent or Undercurrent Protection
• GRI8-04: Overcurrent and Undercurrent Protection

2. Produk Langkungview

The GEYA GRI8 Current Monitoring Relay is a compact, 1-module device designed for DIN rail mounting. It features flexible adjustment options and clear status indicators for ease of use and monitoring.

Fitur konci:

• Tunda adjustable: A time delay of 0.5 - 10 seconds can be set to eliminate short current peaks, preventing nuisance tripping.
• Flexible Current Range Adjustment: Six selectable current ranges (0.05-0.5A, 0.1-1A, 0.2-2A, 0.5-5A, 0.8-8A, 1.6-16A) are available via a potentiometer for precise application matching.
• Universal Supply: Compatible with AC 24 - 240 V or DC 24 V power supplies.
• Kontak Kaluaran: Equipped with 1 SPDT (Single Pole Double Throw) 10A/AC1 output contact.
• Indikasi Status: Relay status is clearly indicated by a green LED for supply and a red LED for relay status.
• DIN Rail Pamasangan: Easy installation on standard DIN rails.
• Current Scanning: Possible to use for current scanning from a current transformer.

Figure 2.1: GEYA GRI8-04 Current Monitoring Relay (Front View)

Figure 2.2: GEYA GRI8-04 Current Monitoring Relay (Side View with Function Diagram)

Figure 2.3: Adjustable Current Ranges (0.05A to 16A)

Figure 2.4: Monitoring Current (AC) of Loading Equipment - GRI8 Models

3. Spésifikasi

Gambar 3.1: Parameter Téknis

Model and Connotation:

Figure 3.2: Model and Connotation

The model number indicates the series, design number, and current range:

• GRI8 Series: Base product series.
• Design Number:
  • 01: Overcurrent
  • 02: Undercurrent
  • 03: Overcurrent or Undercurrent
  • 04: Over/Undercurrent in windows mode
• Current Range (AC):
  • 0.5: 0.05-0.5A
  • 1: 0.1-1A
  • 2: 0.2-2A
  • 5: 0.5-5A
  • 8: 0.8-8A
  • 16: 1.6-16A

4. Instalasi jeung Setup

ukuran:

Gambar 4.1: Diménsi (mm)

Pamasangan:

The GRI8 series relays are designed for 1-MODULE DIN rail mounting. Ensure the DIN rail is securely installed in your electrical panel before mounting the relay.

Diagram Panel:

Figure 4.2: Panel Diagram (GRI8-01, GRI8-02, GRI8-03, GRI8-04)

Panel hareup ngawengku:

• Un (Green LED): Supply Indication
• R (Red LED): Relay Status Indication
• Iset / Imax / Imin / Func: Potentiometers for setting current thresholds and function (depending on model).
• Tt: Potentiometer for Time Delay Setting (0.5-10s).
• Tr: Potentiometer for Power Up Delay Setting (0.1-10s).

Figure 4.3: Detailed Control Panel (GRI8-01 and GRI8-03)

5. Operasi

The GRI8 series relays continuously monitor the current in the connected circuit. When the monitored current exceeds or falls below the set thresholds (depending on the model and settings), the relay will activate its output contact after the configured time delay.

Setting Current Thresholds:

Use the 'Iset', 'Imax', or 'Imin' potentiometer on the front panel to set the desired current threshold for overcurrent or undercurrent detection. Refer to the model-specific diagrams for precise settings.

Setting Time Delays:

• Tt (Tripping Delay): Adjust this potentiometer to set the delay (0.5 - 10 seconds) before the relay trips once a fault condition is detected. This helps to ignore momentary current fluctuations.
• Tr (Power Up Delay): Adjust this potentiometer to set the delay (0.1 - 10 seconds) after power-up before the monitoring function becomes active.

Indikasi Status:

• The Green LED (Un) indicates that the device is powered on.
• The Red LED (R) indicates the status of the output relay. It will illuminate when the relay is active due to a detected current anomaly.

Function Diagrams:

Figure 5.1: Functions Diagram for GRI8 Models

These diagrams illustrate the behavior of each GRI8 model under different current conditions, including hysteresis and time delays (Tr: Power up delay, Tt: Tripping delay).

6. Diagram Kabel

Proper wiring is crucial for the safe and correct operation of the current monitoring relay. Always ensure power is disconnected before performing any wiring.

Kabel umum:

Figure 6.1: General Wiring Diagram

Sambungan Terminal:

• A1-A2: Pasokan Voltage Terminals (Un)
• B1-B2: Monitoring Current Terminals (for AC current monitoring)
• 11-12-14: 1 SPDT Output Contact

GRI8-01 Wiring Example:

Figure 6.2: GRI8-01 Wiring Case Example

Dina ex ieuample, the GRI8-01 is used to monitor the current of a cooker and water heater. The output contacts behave as follows:

• 11-14: Normally Open (NO). After an overcurrent event, this contact will close.
• 11-12: Normally Closed (NC). After an overcurrent event, this contact will disconnect.

7. Cara ngungkulan

If the current monitoring relay is not functioning as expected, consider the following general troubleshooting steps:

• No Power Indication (Green LED off): Pariksa suplai voltage connections (A1-A2) and ensure the power supply is active and within the specified voltage range (AC 24-240V or DC 24V).
• Relay Not Activating/Deactivating:
  • Verify the current monitoring connections (B1-B2) are correct and the load current is flowing through them.
  • Check the set current thresholds (Iset/Imax/Imin) to ensure they are appropriate for the monitored load.
  • Review the time delay settings (Tt, Tr) as these can affect when the relay responds.
  • Ensure the correct GRI8 model is being used for the desired overcurrent/undercurrent function.
• Intermittent Tripping: Adjust the 'Tt' (Tripping Delay) to a slightly longer duration to prevent tripping from momentary current spikes that are not actual fault conditions.
• Incorrect Current Reading: Ensure the current transformer (if used) is correctly installed and matched to the relay's current range.

If issues persist, consult a qualified electrician or contact GEYA technical support.

8. Tips pamaké

Based on common inquiries, here are some tips for using your GEYA Current Monitoring Relay:

• Understand Your Needs: Before installation, clearly identify whether you need overcurrent, undercurrent, or both types of protection. This will help in selecting the correct GRI8 model (e.g., GRI8-01 for overcurrent, GRI8-02 for undercurrent, GRI8-04 for both).
• Accurate Current Range Selection: Use the potentiometer to select the current range that best matches your application's normal operating current. This ensures optimal sensitivity and protection.
• Time Delay Adjustment: Experiment with the 'Tt' (Tripping Delay) setting to find the right balance between immediate fault detection and avoiding false trips due to transient current changes.
• Not a Power Controller: Please note that this device is a current monitoring relay for protection, not a phase angle power controller. It does not regulate power output but rather detects current anomalies to trigger an alarm or shut-off.

9. Pangropéa

The GEYA GRI8 Current Monitoring Relay is designed for long-term, maintenance-free operation. However, periodic checks are recommended:

• Inspeksi Visual: Mariksa périodik alat pikeun tanda-tanda karuksakan fisik, sambungan leupas, atawa robah warna ka warna.
• Integritas sambungan: Ensure all wiring connections remain tight and secure.
• Uji fungsionalitas: If possible and safe to do so, periodically test the relay's tripping function by simulating an overcurrent or undercurrent condition to ensure it responds correctly.
• beberesih: Keep the device clean and free from dust and debris to ensure proper ventilation and operation of indicators. Use a dry, soft cloth for cleaning.

Salawasna pegatkeun sambungan kakuatan saméméh ngalakukeun sagala pangropéa atawa inspeksi.

10. Garansi jeung Rojongan

For warranty information, technical support, or service inquiries, please refer to the official GEYA website or contact your authorized GEYA distributor. Ensure you have your product model number and purchase details available when seeking support.

11. About GEYA

GEYA Electric, established in 2007, is a private-owned enterprise specializing in the research, manufacture, and sales of low voltage electrical and automatic controlling products. The company is located in Wenzhou City and is committed to top quality and constant innovation. GEYA products are certified to required industry standards, including CCC, CE, CB, SAA, SEMKO, TUV, and RoHS.