YASKAWA Σ-V Series User Manual page 131

4 Operation
4.7.1 Hard Wire Base Block (HWBB) Function
(5) 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 voltage
range
Maximum delay time
If the HWBB function is requested by turning OFF the /HWBB1 and /HWBB2 input signals on the two chan-
nels, power supply to the linear servomotor will be turned OFF within 20 ms (see below).
Note: The OFF status is not recognized when the /HWBB1 and /HWBB2 signals are OFF for 0.5 ms or shorter.
4-44
For safety function signal connections, the input signal is the 0V 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 relay or switch
that has micro-current
contacts.
0 V
Signal
Pin Number
Name
CN8-4
/HWBB1
CN8-3
CN8-6
/HWBB2
CN8-5
Items Characteristics
3.3 kΩ
+11 V to + 25 V
20 ms
/HWBB1
ON
/HWBB2
(Normal
operation)
SERVOPACK
Normal operation
State
SERVOPACK
CN8
Switch
4
/HWBB1+
3
/HWBB1-
6
/HWBB2+
5
/HWBB2-
State
ON Does not use the HWBB function.
OFF Uses the HWBB function.
ON Does not use the HWBB function.
OFF Uses the HWBB function.
–
–
Time from when the /HWBB1 and /HWBB2 signals are
OFF to when the HWBB function operates.
Within 20 ms
(Requests motor current shutoff.)
HWBB state
Meaning
Remarks
OFF