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4
(Optional) Connecting Cables to Optional Cards
Dry Contact Card
Customer
equipment
Dry Contact
Pin
Definition
(Default)
18, 5
UPS faults
7, 19
Backfeed
Battery
21, 8
undervoltage
10, 22
Bypass mode
24, 11
Battery mode
13, 25
Normal mode
14, 1
Shutdown signals
NOTE
You can customize dry contact inputs by choosing Settings > Communication Card on the LCD.
Typical Application Scenario
Contact
The UPS is faulty, including:
startup failure, battery fault,
Contact a, lower
rectifier fault, INV fault, internal
than 30 V/1 A
fault, fan fault, charger fault,
memory fault, overvoltage, and
software version fault.
Bypass backfeed alarm. The
Contact a, lower
possible cause is that the bypass
than 30 V/1 A
component is faulty.
Contact a, lower
The battery voltage is less than
than 30 V/1 A
47 V.
The UPS works in bypass mode
when the following conditions are
Contact a, lower
met: The UPS is not powered on,
than 30 V/1 A
the UPS is overloaded, ECO is
triggered, and the UPS is
manually shut down.
The UPS battery supplies power.
The possible cause is that the
Contact a, lower
mains supply is abnormal, the
than 30 V/1 A
battery test is started, and the
battery is powered on in cold start
mode.
Contact a, lower
Mains inverter mode
than 30 V/1 A
Signal input
8
Shutdown
signals
UPS faults
Backfeed
Battery
undervoltage
Bypass mode
Battery mode
Normal mode
Report Criteria
--
Reference
Contact 6
Contact 5
Contact 4
Contact 3
Contact 2
Contact 1
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