Monitoring Safety Input Signals; Interpreting Safety Input Signal Display Status; Safety Input Signal Display Example - YASKAWA SGDV series User Manual

7.5

Monitoring Safety Input Signals

The status of safety input signals can be checked with the safety I/O signal monitor (Un015). The procedure
for the method of interpreting the display and a display example are shown below.

7.5.1 Interpreting Safety Input Signal Display Status

The safety I/O signal monitor (Un015) can be read in the following way. The upper level indicates ON, and
the lower level indicates OFF. All undefined digits are shown in the lower level (OFF).
U n 0 1 5 =
8 7 6 5 4 3 2 1 digit
Display LED Number
1
2
3
4
5
6
7
8
Note: Input signals use the following circuit configuration.
• OFF: Open
• ON: Short-circuited
Example
ON (short-circuited)

7.5.2 Safety Input Signal Display Example

Safety input signals are displayed as shown below.
• When the /HWBB1 signal turns OFF to activate the HWBB function
U n 0 1 5 =
8 7 6 5 4 3 2 1 digit
MECHA
Input Terminal Name
CN8-3, -4
CN8-5, -6
−
−
−
−
−
−
The first digit is
MECHA
in the lower level.

7.5 Monitoring Safety Input Signals

Signal Name
/HWBB1
/HWBB2
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
7
7-7