| 摘要 |
PROBLEM TO BE SOLVED: To provide a control operation testing device for group-controlled elevators, allowing self-generated control operation test without causing troubles in normally operating other elevators. SOLUTION: The control operation testing device comprises short-circuit means such as normally opened contacts 31a1, 32a1 for holding normal operation with a commercial power supply by short-circuiting commercial power supply contacts for elevators not to be tested in response to the cutoff of control operation signals with control operation cutoff means such as cutoff relays 31, 32 and normally closed contacts 31b1-31b4, 32b1-32b4. When the control operation is tested for the No.1 elevator to be tested, e.g. the commercial power supply contact for the No.2 elevator is short-circuited by the short-circuit means 32a1 and a commercial power supply establishment identifying input buffer 52 maintains the operating condition. Thus, the normal operation of the No.2 elevator is held with the commercial power supply. |
