External Interlock; External Interlock; Operation Ready - YASKAWA U1000 Technical Manual

3.14 External Interlock

Systems that may be affected during drive fault conditions should be interlocked with the drive fault output and ready signal.
u

Operation Ready

Under the following conditions, the Operation Ready signal switches off and remains 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.
n 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. Figure 3.60
unable to supply an Operation ready signal.
Terminal
MA, MB, MC
M1-M2
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
illustrates how the application would not be able to run if either drive experiences a fault or is
Output Signal
Operation Ready
Ready1 Ready2 Fault1
Operation ready
Drive 1
MA
Run Fault
MB
S1
Output
MC
SC
M1
Operation Ready
M2
Drive 2
MA
Run Fault
MB
S1
Output
MC
SC
M1
Operation Ready
M2
Figure 3.60 Interlock Circuit Example
Fault
Fault2
Operation Ready
Operation
Circuit
Stop
Run
Controller
Relay 1
Relay 1
SA
Max
250 Vac
Relay 2
Relay 2 SA
Controller
Relay 1
Relay 1
SA
Max
250 Vac
Relay 2
Relay 2 SA

3.14 External Interlock

Parameter Setting
–
H2-01 = 06
Fault 1
Ready 1
Fault 2
Ready 2
3
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