Huawei SMU01C User Manual page 37

SMU01C
User Manual
Figure 9-2 Connecting the SMU01C to a heater
Step 2 Read the heater instruction to check whether the dry contact status when alarms are generated
matches the default dry contact status for the SMU01C. Table 9-1 shows the default
configuration for the SMU01C dry contact input ports.
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Table 9-1 Default dry contact input configurations
Dry Contact
DIN1
DIN2
Step 3 Figure 9-3 shows how to modify the default dry contact input configurations.
Issue 03 (2015-01-05)
If the heater generates alarms when the dry contact is open, perform step 3 to change the
default DIN2 port status to Low.
If the heater alarm generates alarms when the dry contact is closed, perform step 4 to
check whether an alarm is generated.
Default Dry Contact Status
(High-Close, Low-Open)
High
High
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9 Alarm Management
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