MITSUBISHI ELECTRIC 2033D SERIES UPS systems - Manual (Page 29)

MITSUBISHI ELECTRIC 2033D SERIES UPS
MITSUBISHI
ELECTRIC 2033D SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
2-10
A) Output Contacts (for external alarm annunciation)
Output contacts consist of form “A” dry type contacts. Rated capacity of all output
contacts is NEC Class2 (30Vdc/1Adc). All dry contacts should be operated at their
rated values or lower. Figure 2.16 illustrates a typical installation. The external relay
can also be a lamp, LED, computer, etc.
FIGURE 2.16 Control Wiring for External Contacts
Terminal
UPS Cabinet External to UPS
Cabinet
Relay
Coil
NEC Class 2
Power Source
Relay
Contact
Terminal
Details of output alarm contacts : TN1
Terminals 1 to 2, 3 to 4 "UPS failure" contact
Activated when a major fault has occurred to the system.
Terminals 5 to 6, 7 to 8 "Load on Bypass" contact (OUT1)
Activated when the power is supplied from the static bypass input.
Terminals 9 to 10, 11 to 12 "Load on Inverter" contact (OUT2)
Activated when the power is supplied by the inverter.
Terminals 13 to 14, 15 to 16 "Battery Operation" contact (OUT3)
Activated when the battery is operating following an AC power failure.
Terminals 17 to 18, 19 to 20 "Converter Operation" contact (OUT4)
Activated when the converter is operating.
Terminals 21 to 22, 23 to 24 "Battery Low Voltage" contact (OUT5)
Activated when the battery voltage drops below discharge end voltage level
during inverter operation (i.e. During AC fail condition).
Terminals 25 to 26, 27 to 28 "Overload" contact (OUT6)
Activated when an overload has occurred to the system.
Terminals 29 to 30, 31 to 32 "Bypass Sync.” contact (OUT7)
Activated when the system is in sync. Mode.
User supplied