comat RELECO MRS13R Overcurrent Protection Relay Instruction Manual
- August 15, 2024
- comat RELECO
Table of Contents
comat RELECO MRS13R Overcurrent Protection Relay
Product Information
Specifications:
- Nominal Voltage: 12 – 48 V AC / DC
- Operating Voltage Range: 10 – 60 V AC / DC
- Power Consumption AC / DC: 3.2 VA / 1.6 W
- Power Supply Frequency Range: 0; 16 – 63 Hz
- Overcurrent Threshold / Saturation Current Threshold: -5 – 5 A
- Measuring Current Range: -5 – 5 A
- Short Saturation Current: 50 A for 20 s
- Minimum Overcurrent Time for Detection: 4.5 ms
- Minimum Saturation Current Duration for Detection: 3.1 ms
- Number of Contacts: 1 NO + 1 NC forcibly guided contacts, compliant with IEC 61810-3
- Rated Voltage (Main Circuit): 240 V AC
- Rated Current (Main Circuit): 6 A
- Operating Temperature: 10% – 95%
- Ingress Protection: IP 20
Product Usage Instructions
Installation:
- Ensure the power source voltage is within the specified range of 12 – 48 V AC/DC.
- Mount the device in a suitable location following the installation guidelines provided in the manual.
Configuration:
- Connect the necessary cables according to the wiring diagram provided.
- Adjust any settings or thresholds as required using the configuration interface.
Operation:
- Power on the device and monitor the readings on the display or connected interface.
- Ensure that the device is functioning within the specified parameters during operation.
Maintenance:
- Regularly check for any signs of damage or wear on the device.
- Clean the device using a soft, dry cloth to prevent dust buildup.
FAQ:
-
Q: What should I do if the device shows an error code?
A: Refer to the user manual for troubleshooting steps related to the specific error code displayed. -
Q: Can I adjust the overcurrent threshold settings?
A: Yes, you can adjust the overcurrent threshold and other settings through the configuration menu. -
Q: Is it safe to operate the device in high humidity conditions?
A: The device is rated for operation in relative humidity conditions of 10% to 95%, ensuring safe use within this range.
Safety instructions
- WARNING: Read the enclosed instructions carefully before use! Disregarding the instructions may result in damage to equipment and/or serious personal injury.
- WARNING: The device may only be installed by qualified personnel familiar with the national and international laws, directives and standards that apply to this region.
- WARNING: This device is not suitable for use in wet areas, or explosive atmospheres (e.g. in areas where the air contains high concentrations of flammable chemicals, vapours or particles such as grain, dust or metal powder).
- WARNING: Only mount and unmount the device when it is disconnected from the power supply. This applies to the power supply as well as to all inputs and outputs.
- WARNING: During operation, the electrical connection points of the device carry hazardous voltages! These connection points must not be touched.
Technical Data
| Nominal voltage | 12 … 48 V AC / DC |
|---|---|
| Operating voltage range | 10 … 60 V AC / DC |
| Power consumption AC / DC | 3.2 VA / 1.6 W |
| Power supply frequency range | 0; 16 … 63 Hz |
| Overcurrent threshold/saturation current threshold | Ith / Imax |
| Measuring current range | -5 … 5 A |
| short saturation current | 50 A during 20 s |
| Minimum overcurrent time for detection | 4.5 ms |
| Minimal saturation current duration for detection | 3.1 ms |
| Number of contacts | 1 NO + 1 NC forcibly guided, complies with IEC |
61810-3
Rated voltage (main circuit)| 240 V AC
Rated current (main circuit)| 6 A
Operating temperature| -40 … 70 ˚C ( Display -20 … 70 ˚C)
Relative humidity, no condensation| 10 – 95 %
Ingress protection| IP 20
Wiring diagrams
| A1 / A2 | Appliance power |
|---|---|
| DI1 / DI2 | Dia- gnosis input |
| I+ / I– | Current measurement input |
| 11 / 12 | Relay |
| 23 / 24 | Relay |
Functionality
| t D1 | Overcurrent detection time | 4.5 ms |
|---|---|---|
| t D2 | Saturation current detection time | 3.1 ms |
| t μC | Controller processing time | 1.3 ms |
| t Don | Switch-on delay | configurable |
| t Doff | Switch-off delay | configurable |
| t Op | Relay operation time | 15 ms |
| t Rel | Relay release time | 3 ms |
| t B NO | Relay bouncing time NO contact | 2 ms |
| t B NC | Relay bouncing time NC contact | 15 ms |
Switching state
Menu navigation
- Increase value / Go to next menu point
- Decrease value / Go to the previous menu point
OK Confirm and save value / Select menu point
OK (long hold) Cancel without saving / Back to the previous menu
If no key is activated during 20 s, the device returns to the default state without saving the last parameter.
Factory setting includes default parameters:
- Monitoring: ON
- Current threshold device Ith: 3 A
- Current threshold load Ith: 1200 A
- Hysteresis: 5.0 %
- On delay tON: 0.0 s
- Off delay tOFF: 3.0 s
Switching state indicator
Power supply| Load current IL| Diagnostic Input|
LED| Relay | Switching state NC contact| Switching
state NO contact
---|---|---|---|---|---|---
Off| Any| Any| does not light up| Off| Closed| Open
On| IL ≤ Ith| 0| does not light up| Off| Closed| Open
On| IL > Ith| 0| lights permanently| On| Open| Closed
On| IL ≤ Ith| 1| lights permanently| On| Open| Closed
On| IL > Ith| 1| lights permanently| On| Open| Closed
On| IL ≤ Ith ➞ IL > Ith| 0| flashes briefly| Off
On
| Closed
Open
| Open
Closed
On| IL > Ith ➞ IL ≤ Ith| 0| flashes briefly | On
Off
| Open
Closed
| Closed
Open
You can find detailed information at www.comatreleco.com in the download area.
ComatReleco AG | Birchstrasse 24 | CH-3186 Düdingen | Switzerland
Phone +4131 838 55 77
comatreleco.com
info@comatreleco.com