MITSUBISHI | 2033C SERIES UPS | Page Number: |
ELECTRIC | OWNERS / TECHNICAL MANUAL |
A)Output Contacts (for external alarm annunciation)
Output contacts consist of form “A” dry type contacts. The rated capacity of all output contacts is 120Vac/0.5Aac or 30Vdc/1Adc. All dry contacts must be operated at their rated values or lower. Figure 2.7 illustrates a typical installation. The external relay can also be a lamp, LED, or computer, etc.
FIGURE 2.7 Control Wiring for External Contacts
UPS Cabinet
Terminal
Relay
ContactTerminal
External to UPS Cabinet
Relay
Coil
Power
Source
User supplied
Details of output alarm contacts :
Terminals 5 to 6 “Summary Alarm” contact
Activated when a fault alarm occurs.
Terminals 7 to 8 “Load on Inverter” contact
Activated when the power is supplied by the inverter. Terminals 9 to 10 “Load on Bypass” contact
Activated when the power is supplied by the static bypass input.
Terminals 11 to 12 “Battery Operation” contact
Activated when the battery is operating following an AC power failure. Terminals 13 to 14 “Converter Operation” contact
Activated when the converter is operating. Terminals 15 to 16 “Battery Low Voltage” contact
Activated when battery voltage drops below discharge end voltage level during inverter operation (i.e. During AC failure conditions).
Terminals 17 to 18 “Overload” contact Activated when a system overload occurs.
MITSUBISHI ELECTRIC 2033C SERIES UPS