Campbell Hausfeld SDM-CD16AC - Manual (Page 6)

SDM-CD16AC 16 Channel AC/DC Controller
2. Control Specifications
Operating voltage: 12 VDC nominal (9 to 18).
Current drain at 12 VDC: 6 mA quiescent; 45 mA per active LED (switch on
or auto active).
Total cable length: 20 ft (for most applications), 600 ft (possible for CR7)
Toggle switch: ON/OFF manual override; AUTO for datalogger control.
Underwriters Laboratories (UL) and Canadian Underwriters Laboratories
(CUL) listed product. UL and CUL listing number is 5Z21.
RELAY SPECIFICATIONS
Arrangement: Single pole double throw, Break before make
Contact material: Gold-clad silver
Individual contact rating: 5 A at 30 VDC, .3 A at 110 VDC, 5 A 1/10 HP at
125 VAC, 5 A 1/6 HP at 277 VAC
Coil voltage: 9 to 18 VDC
Coil resistance: 360 Ohms
•±10%
Expected life (contact closures): Mechanical 10 7
Actuation/Release time: Approx. 4 ms
Operating temp.: -40
° to 70°C
3. Power Considerations
The SDM-CD16AC power requirements are large compared to most CSI
products. For most applications an external power supply (see Figure 3) is
recommended to power the SDM-CD16AC.
For some applications it may be convenient to use the datalogger supply to
power the SDM-CD16AC (see Figure 3). For long-term applications, the lead
acid power supply available with CSI dataloggers should be used, allowing the
batteries to be float charged. It is not recommended that the datalogger
alkaline supply be used to power the SDM-CD16AC for long term
applications.
If the datalogger lead acid supply is used, the number of SDM-CD16AC's that
can be powered is limited by the 300 mA current sourcing capability of the
wall charger. With a continuous 6 mA current drain per SDM-CD16AC and
45 mA per active LED, a maximum of 6 LEDs may be powered by the
datalogger, after which, more current is drawn than can be sourced by the wall
charger. If this condition is maintained, it will ultimately lead to battery deep
discharge, requiring new batteries.
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