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Overview
With an SDM-CD8S, your data logger can control dc devices that have a moderate current load, such as solenoids, solenoid valves, dc motors, stepper motors, lights, horns, heaters, and fans. The SDM-CD8S is ideal for applications requiring only a few control ports, where a larger, high-powered relay module (such as the SDM-CD16S) is not necessary.
Benefits and Features
- Provides a manual override
- Enables multiple SDM-CD8S devices to be wired to one data logger, increasing the number of devices that can be controlled
- Includes LEDs that provide a visual indicator of active outputs
Detailed Description
The SDM-CD8S has eight dc-voltage outputs and returns that can be switched on and off manually or under data logger control.
- When the manual control switch is in the ON position, outputs are controlled by the position of the individual rocker switches.
- In the OFF position the state of the relays is controlled by the SDM commands from the data logger.
The voltage range for this device is 8 to 26 Vdc. It can deliver up to 1 A per channel with a maximum of 6 A total for all channels. The power input (8 to 26 Vdc) powers both the outputs and the SDM-CD8S logic.
SDM Operation
The SDM-CD8S is a synchronously addressed data logger peripheral. Data logger control ports 1, 2, and 3 are used to address the SDM-CD8S, then clock out the desired state of each of the eight control ports. Up to 15 SDM-CD8S controllers may be addressed, making it possible to control a maximum of 120 ports from the first three data logger control ports.
SDM Operation
The SDM-CD16ACA is a synchronously addressed data logger peripheral. Data logger control ports 1, 2, and 3 are used to address the SDM-CD16ACA, then clock out the desired state of each of the 16 control ports. Up to 15 SDM-CD16ACAs may be addressed, making it possible to control a maximum of 256 ports from the first three data logger control ports.
Specifications
| Function | Allows the data logger to control dc devices that have a moderate current load, such as solenoids, solenoid valves, dc motors, stepper motors, lights, horns, heaters, and fans. |
| Number of Channels | 8 |
| Supply Voltage Range | 8 to 26 Vdc |
| Operating Voltage | 12 Vdc |
| Logic Current Drain (@ 12 Vdc) |
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| Toggle Switch |
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| Maximum Current |
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| Actuation/Release Times | 8 μs/200 μs |
| Operating Temperature | -40° to +70°C |
| Dimensions | 11.1 x 8.6 x 2.4 cm (4.4 x 3.4 x 0.9 in.) |
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