SDM-CD16S
SDM-CD16S
Orderable16-Channel Solid-State DC Controller
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.
Key Advantages
For dc devices with
higher current loads
Technical 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.
Benefits
- 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
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)
- 15 mA quiescent
- Logic Current Drain (@ 12 Vdc)
- 2.5 mA per active LED
(manual or auto)
- Toggle Switch
- MANUAL, OFF, 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)
- Maximum Current
- 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)
Related Resources
Documents
- Manual
SDM-CD16S 16-Channel Solid State DC Relay Controller Module
January 2008
View Document - Brochure
SDM-CD16S 16-Channel Solid State DC Relay Controller
March 2026
View Document - Compliance
SDM-CD8S and SDM-CD16S EU Declaration of Conformity
October 2018
View Document - Compliance
SDM-CD8S and SDM-CD16S UK Declaration of Conformity
View Document