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SDM-CD16S (16-Channel Solid-State DC Controller)

Liên hệ: 0912 566 477


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.


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)
  • 15 mA quiescent
  • 2.5 mA per active LED (manual or auto)
Toggle Switch
  • Individual dip switches for manual
Supply Voltage for Output 48 V max (dc only)
Operating Voltage 12 Vdc
Maximum Current
  • 2 A (per channel)
  • 10 A fused (all channels total)
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)


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
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

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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