3.
Make sure that the EDM signal operates during usual operation as shown in
1.13.
■
Safe Disable Monitor Output Function and Keypad Display
Refer to
Table 1.13
Safety monitor output status, and drive output status.
Table 1.13 Safe Disable Input and External Device Monitor (EDM) Terminal Status
Input Channel
Status
Input 1
Input 2
(H1-HC)
(H2-HC)
ON
ON
(Close the
(Close the
circuit)
circuit)
ON
OFF
(Close the
(Open)
circuit)
ON
OFF
(Close the
(Open)
circuit)
OFF
OFF
(Open)
(Open)
Safety Function Status Monitor
The drive Safety monitor output sends a feedback signal about the status of the Safety
function. The Safety monitor output is one of the possible settings available for the
MFDO terminals. If there is damage to the Safe Disable circuit, a controller (PLC or
safety relay) must read this signal as an input signal to hold the "Safe Torque Off" status.
This will help verify the condition of the safety circuit. Refer to the manual for the safety
device for more information about the Safety function.
It is possible to switch polarity of the Safety monitor output signal with the MFDO
function settings. Refer to
Keypad Display
If the two input channels are OFF (Open), the keypad will flash STo [Safe Torque OFF].
If there is damage to the Safe disable circuit or the drive, the keypad will flash SToF [Safe
Torque OFF Hardware] when one input channel is OFF (Open), and the other is ON
(Short circuit). When you use the Safe disable circuit correctly, the keypad will not show
SToF.
YASKAWA TOMPC7106173UA GA500 Installation and Operation Instruction
for information about the relation between the input channel status,
Safety Monitor
Output Status
MFDO
MFDO
Terminal
Terminal
(H2-xx =
(H2-xx =
21)
121)
OFF
ON
OFF
ON
OFF
ON
ON
OFF
Table 1.13
for setting instructions.
Drive
Keypad
Output
Display
Status
Baseblock
Normally
(Drive
displayed
ready)
Safety
SToF
status
(Flashing)
(STo)
Safety
SToF
status
(Flashing)
(STo)
Safety
STo
status
(Flashing)
(STo)
1 English
MEMOBUS Register
0020H
READY
LED
bit C
READY:
Illumina
0
ted
ALM/
ERR:
1
Flashing
ALM/
ERR:
1
Flashing
READY:
0
Flashing
Table
bit D
0
0
0
1
51