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Overview
You can control up to 12 external ac or dc devices using the six internal relays of the A6REL-12. Each relay set can be controlled manually or by a data logger.
Benefits and Features
- UL/CUL approved product
Detailed Description
The A6REL-12’s internal relays are dual single-pole double-throw. Each of the six relays has a three position toggle switch; “on” and “off” for manual override, and “auto” for data logger control. In the on position, the common and normally open contacts are shorted. In the auto position, the state of a relay is controlled by a data logger control port.
A6REL-12’s with serial numbers 1445 and higher are UL-approved.
Specifications
| Function | Controls up to 12 external ac or dc devices. |
| Number of Channels | 6 |
| Operating Voltage | 12 Vdc nominal (8.4 to 24 Vdc) |
| Current Drain at 12 Vdc |
|
| Toggle Switch | ON/OFF manual override; AUTO for data logger control |
| Relays | dual single pole double throw, break before make |
| Contact Material | Gold-clad silver |
| Coil Resistance | 720 Ω ±10% |
| Contact Ratings |
|
| Release/Actuation Time | ~3 ms |
| Operating Temperature | -40° to +70°C |
| Standards |
|
| Dimensions | 22.4 x 13.9 x 4.1 cm (8.8 x 5.5 x 1.6 in.) including switches and mounts |
| Weight | 635 g (1.4 lb) |
Expected Life (contact closures) |
|
| Mechanical | 108 |
| Electrical |
|
Compatibility
Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
Data Loggers
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | V | |
| CR10 (retired) | V | |
| CR1000 (retired) | V | |
| CR10X (retired) | V | |
| CR200X (retired) | X | |
| CR206X (retired) | X | |
| CR211X (retired) | X | |
| CR216X (retired) | X | |
| CR23X (retired) | V | |
| CR295X (retired) | X | |
| CR3000 (retired) | V | |
| CR500 (retired) | V | The CR500 has only one control port capable of providing a control signal. |
| CR5000 (retired) | V | |
| CR510 (retired) | V | The CR510 has only one control port capable of providing a control signal. |
| CR800 | V | The CR800 has only four control ports capable of providing a control signal. |
| CR850 | V | The CR850 has only four control ports capable of providing a control signal. |
| CR9000 (retired) | V | |
| CR9000X (retired) | V |
Mounting Equipment
| Product | Compatible | Note |
|---|---|---|
| ENC10/12 | V | |
| ENC10/12R | V | |
| ENC12/14 | V | |
| ENC14/16 | V | |
| ENC16/18 | V | |
| ENC24/30 | V | |
| ENC24/30S | V |
Additional Compatibility Information
Data Logger Considerations
Each of the six relays is controlled by a data logger control port.
Cables
| Cable(s) Used | Number of Relays Controlled |
| One CABLE3CBL-L | 1 |
| One CABLE4CBL-L | 2 |
| One CABLE5CBL-L | 3 |
| Two CABLE3CBL-L | 4 |
| One CABLE3CBL-L and one CABLE4CBL-L |
5 |
| Two CABLE4CBL-L | 6 |
Power Considerations
The A6REL-12 consumes 30 mA per active LED. The A6REL-12 may be powered by the data logger power supply (see manual for considerations with 21X) or a separate 8.4 to 24 Vdc battery. The A6REL-12 must be powered by a Class 2 device (Campbell Scientific power supplies conform to this requirement).
Enclosure Considerations
The A6REL-12 requires a non-condensing environment; a Campbell Scientific enclosure is recommended. A6REL-12’s with serial numbers 1445 and higher include mounting flanges with keyhole slots that attach to the backplate of an enclosure. Grommets and screws are provided.
A6REL-12s with serial numbers 1444 and lower require the 6281 bracket kit for attachment to the backplate of Campbell enclosures.
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