Mitsubishi Electric 9900B Series Owner Technical Manual page 25

MITSUBISHI
ELECTRIC
11. "RESET" switch (FOR SERVICE PERSONNEL ONLY)
This switch resets errors resulting from alarm conditions.
12. "TEST" switch (FOR SERVICE PERSONNEL ONLY)
This switch changes system operation to test-mode.
13. "MAINTENANCE" switch (FOR SERVICE PERSONNEL ONLY)
This switch sets the UPS menu parameters.
14. "BOOT" switch (FOR SERVICE PERSONNEL ONLY)
This switch boots the processor on the main control circuit board following alarm conditions.
15. "52L S/W" switch (FOR SERVICE PERSONNEL ONLY)
This switch prohibits turning on the AC output contactor "52C" during test/maintenance in
Parallel Operation system application.
16. External contact signal terminal block
This terminal block is used to connect contact signal input/output lines to and from external dry
contacts. Refer to Figure 2.10 for details.
9900B SERIES UPS
OWNERS / TECHNICAL MANUAL
MITSUBISHI ELECTRIC 9900B SERIES UPS
Page Number:
1-19