MITSUBISHI ELECTRIC 9800A SERIES UPS
MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
Description of Figures 1.4, 1.5, and 1.6:
1. CPM - Circuit protector for control power supply.
2. Grounding bar (G)
3. External contact signal terminal block (FIGURE 1.6) - Terminal block to connect
contact signal input/output lines to and from the external devices. Refer to Figure 2.15
section 2.4 for details.
4. RS232C communication connector (FIGURE 1.6) - Refer to Figure 2.18 section 2.5 for
details.
5. Inverter start switch - This switch is used to transfer the UPS from static bypass to
inverter during maintenance purposes. Transfers will lock-out if the bypass voltage is
more than +12%,-12% of nominal.
* Uninterrupted switching is made at the time of synchronous operation. Switching is impossible at
the time of asynchronous operation.
6. “INVERTER STOP” switch - This switch is used to transfer the UPS from inverter to
static bypass during maintenance purposes. Do not operate it under normal operation.
Transfers will lock-out if the bypass voltage is more than +12%,-12% of nominal.
* Uninterrupted switching is made at the time of synchronous operation. Switching is impossible at
the time of asynchronous operation.
7. “FAULT RESET” switch (FOR SERVICE PERSONNEL ONLY) - This switch resets
errors resulting from alarm conditions. (Do not operate this switch while inverter and
converter are in operation.)
8. Maintenance (Set) button (FOR SERVICE PERSONNEL ONLY) - This switch sets the
UPS menu parameters.
9. “Test mode” switch (FOR SERVICE PERSONNEL ONLY) - This switch changes
system operation to the test-mode. (This switch should not be operated by personnel
other than an Authorized Service Engineer).
10. “BOOT” switch (FOR SERVICE PERSONNEL ONLY) - This switch boots the
processor in the main control circuit resulting from alarm conditions. (Do not operate
this switch while inverter and converter are in operation).
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