External Interlock; External Interlock; Drive Ready - YASKAWA P1000 Technical Manual

3.12 External Interlock

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 3.39
unable to supply a Drive Ready signal.
Terminal
MA, MB, MC
M1-M2
104
illustrates how the application would not be able to run if either drive experiences a fault or is
Ready1 Ready2
Drive Ready
Drive 1
RUN
S1
Fault
SC Output
Drive Ready
Drive 2
RUN
S1
Fault
Output
SC
Drive Ready
Figure 3.39 Interlock Circuit Example
Output Signal
Fault
Drive Ready
Fault1 Fault2
Operation
Circuit
Stop
Controller
MA
Relay 1
SA
Max
MB
250 Vac
MC
Relay 2 SA
M1
M2
Controller
MA
Relay 1
SA
Max
MB
250 Vac
MC
Relay 2 SA
M1
M2
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
Parameter Setting
–
H2-01 = 06
Drive Ready
Run
Relay 1
Fault 1
Relay 2
Ready 1
Relay 1
Fault 2
Relay 2
Ready 2