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Overview
With an SDM-CD16S, your data logger can control dc devices that have a relatively high-powered load, such as solenoids, solenoid valves, dc motors, stepper motors, lights, horns, heaters, and fans. With a voltage range of up to 48 Vdc and a maximum current output per channel of 2 A, the SDM-CD16S can drive up to 100 W of power on each channel.
Benefits and Features
- Allows the data logger to automatically turn devices on or off when a threshold (for example, temperature or water depth) has been reached
- Provides a manual override
- Includes LEDs for a visual indicator of active outputs
- Drives up to 100 W of power on each channel
Detailed Description
This relay driver provides 16 dc voltage outputs that can be switched on and off manually or under data logger control. The SDM-CD16S’s toggle switch has three positions: MANUAL, OFF, and AUTO.
- In the MANUAL position, outputs are controlled by the position of the individual rocker switches.
- In the OFF position, all outputs are off.
- In the AUTO position, the state of the relays is controlled by the SDM commands from the data logger or by the logic control inputs.
Separate inputs for power-to-outputs (48 Vdc maximum) and power-to-SDM-CD16S logic (7 to 48 Vdc) allow the option of powering the logic from the data logger’s 12 V while switching a higher voltage.
SDM Operation
The SDM-CD16S is a synchronously addressed data logger peripheral. Data logger control ports 1, 2, and 3 are used to address the SDM-CD16S, then clock out the desired state of each of the eight control ports. Up to 15 SDM-CD16S devices may be addressed, making it possible to control a maximum of 256 ports from the first three data logger control ports.
Data Logger Connection
The CABLE5CBL-L is recommended for connecting the module to the data logger. A 1-ft cable length should be sufficient when both data logger and SDM-CD16S are housed within an ENC12/14 enclosure; a 2-ft length may be required if the data logger and SDM-CD16S are housed at opposite ends of an ENC16/18 Enclosure. The cable length should be as short as possible. Typically, the maximum cable length is 20 ft. Contact Campbell Scientific if the length needs to be longer.
Specifications
| Function | Allows the data logger to control dc devices that have a relatively high-powered load, such as solenoids, solenoid valves, dc motors, stepper motors, lights, horns, heaters, and fans. |
| Number of Channels | 16 |
| Isolation | Optically isolated between the inputs and outputs |
| Logic Power Voltage | 7 to 48 Vdc |
| Logic Current Drain (@ 12 Vdc) |
|
| Toggle Switch |
|
| Supply Voltage for Output | 48 V max (dc only) |
| Operating Voltage | 12 Vdc |
| Maximum Current |
|
| Fuse | 3 AG 10 A |
| Actuation/Release Times | 8 μs/200 μs |
| Operating Temperature | -40° to +70°C |
| Maximum Cable Length | 6 m (20 ft) total to all SDM devices (Contact Campbell Scientific if longer lengths are necessary.) |
| Dimensions | 24.1 x 12.7 x 6.4 cm (9.5 x 5.0 x 2.5 in.) |
| Weight | 771.1 g (1.7 lb) |
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 | |
| CR1000X | V | |
| CR10X (retired) | V | |
| CR200X (retired) | X | |
| CR206X (retired) | X | |
| CR211X (retired) | X | |
| CR216X (retired) | X | |
| CR23X (retired) | V | |
| CR295X (retired) | X | |
| CR300 | X | |
| CR3000 (retired) | V | For the CR3000, SDMs are connected to the ports labeled SDM-C1, SDM-C2, and SDM-C3. |
| CR310 | X | |
| CR350 | X | |
| CR500 (retired) | X | |
| CR5000 (retired) | V | For the CR5000, SDMs are connected to the ports labeled SDM-C1, SDM-C2, and SDM-C3. |
| CR510 (retired) | X | |
| CR6 | V | |
| CR800 | V | |
| CR850 | V | |
| CR9000 (retired) | X | |
| CR9000X (retired) | X |
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 |
Distributed Data Acquisition
| Product | Compatible | Note |
|---|---|---|
| GRANITE 10 | V | |
| GRANITE 6 | V | |
| GRANITE 9 | V |
Additional Compatibility Information
Enclosure Considerations
The SDM-CD16S requires a desiccated, non-condensing environment; a Campbell Scientific enclosure is recommended. Grommets and screws are provided to attach the flanges/bracket to the backplate of our enclosures.
Power Considerations
The SDM-CD16S power requirements may be large compared to most Campbell Scientific products. For most applications, an external power supply is recommended to power the SDM-CD16S.
For some applications, it may be convenient to use the data logger’s sealed-rechargeable battery. If the data logger’s rechargeable batteries are used, the batteries need to be float charged via a wall charger or solar panel. The current available from the wall charger limits the SDM continuous output current. Campbell Scientific does not recommend using the data logger’s alkaline power supply.
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