Installation - Campbell SDM-IO16 User Manual

4. Installation

CAUTION
Connection Order
SDM-IO16
a) Connection with Datalogger Supply
SDM-IO16
(b) Connection with External Supply
Figure 3. Connection Block Diagrams
For correct operation the SDM-IO16 must be installed where there is no risk of
water ingress or condensation.
The order in which connections are made is critical. Always
connect 12 V first, followed by ground, then the control ports.
The CABLE5CBL-L or a similar cable connects the datalogger to the SDM-IO16.
For datalogger connections, see Table 1, below. Please refer to Figure 4 for details
of how to use the spring-loaded terminals.
Table 1. Datalogger to SDM-IO16 Connections
SDM-IO16
First 12 V
Second
C1
C2
C3
GND
12 V
SDM-C1 or C1
SDM-C2 or C2
SDM-C3 or C3
EXTERNAL
9 TO 18 VDC
+ -
GND
12 V
DATALOGGER
SDM-C1 or C1
SDM-C2 or C2
SDM-C3 or C3
Datalogger
CR800, CR850, CR1000,
CR6, CR1000X
CR10(X), 21X, CR7
12 V on datalogger or
external supply
or G
C1
C2
C3
User Guide
DATALOGGER
CR3000, CR5000
12 V on datalogger or
external supply
G
SDM-C1
SDM-C2
SDM-C3
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