External Interlock; External Interlock; Drive Ready - YASKAWA Z1000 User Manual

3.12 External Interlock

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

Drive Ready

When the "Drive ready" signal has been set to one of the multi-function contact outputs, that output will close whenever the
drive is ready to accept a Run command or is already running.
The "Drive ready" signal switches off when operation is not possible for a Run command input under the following conditions
regardless of whether a fault exists:
• when the power supply is shut off
• during a fault
• when there is problem with the control power supply
• when a parameter setting error makes the drive unable to run even if a Run command has been entered
• 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
n Interlock Circuit Example
Two drives running a single application might interlock with the controller using the Drive Ready and Fault output signals as
shown below. Figure 3.49
unable to supply a Drive Ready signal.
Terminal
MA, MB, MC
M1-M2
YASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual
illustrates how the application would not be able to run if either drive experiences a fault or is
Ready1 Ready2
Drive Ready
Drive 1
MA
Run Fault
MB
S1
Output
SN MC
M1
Drive Ready
M2
Drive 2
MA
Run Fault
MB
S1
Output
SN MC
M1
Drive Ready
M2
Figure 3.49 Interlock Circuit Example
Output Signal
Fault
Drive Ready
Fault1 Fault2
Drive Ready
Operation
Circuit
Stop
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

3.12 External Interlock

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