MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
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
UPS Cabinet
Terminal
Relay
ContactTerminal
External to UPS Cabinet
Relay
Coil
NEC Class 2 Power Source
User supplied
Details of output alarm contacts : TN1
Terminals 1 to 2, 3 to 4 "UPS failure" contact
Activated when a major fault has occurred with 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 "Rectifier Operation" contact (OUT4)
Activated when the rectifier 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 through 40 "Spare" contact (OUT7 through OUT9)