3.15 External Interlock
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual 127
3.15 External Interlock
Systems that may be affected during drive fault conditions should be interlocked with the drive fault output and ready
signal.
NOTICE: Systems should be interlocked to shut off power to the drive if the drive experiences a fault for models CIMR-U40477 to
40930.
◆ Operation Ready
When the “Operation Ready” signal has been set to one of the multi-function contact outputs, the output will close when
the drive is ready to accept a Run command or is already running. Under the following conditions, the Operation Ready
signal will switch off and remain off during a fault, even if a Run command is entered:
• when the power supply is shut off
• during a fault
• when there is problem with the control power supply
• when a parameter setting error renders the drive unable to run even when entering a Run command
• when a fault such as overvoltage or undervoltage is triggered as soon as the Run command is entered
• when the drive is in the Programming mode and will not accept a Run command even when entered
■
Interlock Circuit Example
Two drives running a single application might interlock with the controller using the Operation ready and Fault output
signals as shown below. The figure illustrates how the application would not be able to run if either drive experiences a
fault or is unable to supply an Operation ready signal.
Figure 3.82
Figure 3.81 Interlock Circuit Example
Terminal Output Signal Parameter Setting
MA, MB, MC Fault –
M1-M2 Operation Ready H2-01 = 06
Operation
Circuit
Operation Ready
Operation ready
Stop
Ready1 Ready2 Fault1
Run
Fault2
Run
S1
SC
MB
MA
M2
M1
MC
Fault 1
Ready 1
SA
SA
Max
250 Vac
Relay 1
Relay 2
Relay 1
Relay 2
Controller
Fault
Output
Operation Ready
Operation Ready
Drive 1
Run
S1
SC
MB
MA
M2
M1
MC
Fault 2
Ready 2
SA
SA
Max
250 Vac
Relay 1
Relay 2
Relay 1
Relay 2
Controller
Fault
Output
Drive 2
SIEP_C710636_02B_1_0.book 127 ページ ２０１５年１２月１日 火曜日 午前１１時２０分
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