YASKAWA SGMJV User Manual page 148

4 Operation
4.9.1 Hard Wire Base Block (HWBB) Function
(6) Connection Example and Specifications of Input Signals (HWBB Signals)
The input signals must be redundant. A connection example and specifications of input signals (HWBB sig-
nals) are shown below.
 Connection Example
 Specifications
Type
Input
The input signals (HWBB signals) have the following electrical characteristics.
Internal Impedance
Operation Movable Volt-
age Range
Maximum Delay Time
If the HWBB function is requested by turning OFF the /HWBB1 and /HWBB2 input signals on the two chan-
nels, the power supply to the servomotor will be turned OFF within 20 ms (see below).
/HWBB1
/HWBB2
SERVOPACK
State
Note 1. The OFF status is not recognized if the total OFF time of the /HWBB1 and /HWBB2 signals is 0.5 ms or shorter.
2. The status of the input signals can be checked using monitor displays. For details, refer to 7.5 Monitoring Safety
4-62
For safety function signal connections, the input signal is the 0 V common and the output
signal is the source output. This is opposite to other signals described in this manual. To
avoid confusion, the ON and OFF status of signals for safety functions are defined as fol-
lows:
ON: The state in which the relay contacts are closed or the transistor is ON and current
flows into the signal line.
OFF: The state in which the relay contacts are open or the transistor is OFF and no cur-
rent flows into the signal line.
24-V power
supply
Fuse
Use a switch
that has micro-current
contacts.
0 V
Signal Connector
Name Pin Number
CN8-4
/HWBB1
CN8-3
CN8-6
/HWBB2
CN8-5
Items Characteristics
3.3 kΩ
+11 to + 25 V
20 ms
Within 20 ms
ON
(Normal operation)
Normal operation
Input Signals.
SERVOPACK
CN8
Switch
/HWBB1+ 4
/HWBB1-
3
/HWBB2+
6
/HWBB2-
5
Setting
ON (closed) Does not use the HWBB function. (normal operation)
Uses the HWBB function. (motor current shut-off
OFF (open)
request)
ON (closed) Does not use the HWBB function. (normal operation)
Uses the HWBB function. (motor current shut-off
OFF (open)
request)
−
−
Time from the /HWBB1 and /HWBB2 signals are OFF to
the HWBB function operates.
OFF (Motor current
shut-off request)
HWBB state
Meaning
Remarks