YASKAWA E-V Series User Manual page 176

(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.
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 is signal status, the ON and OFF status of signals for safety functions
are defined as follows:
ON: The state in which the relay contacts are closed or the transistor is ON and current
OFF: The state in which the relay contacts are open or the transistor is OFF and no cur-
Connection Example for Input Signals (HWBB Signals)
Specifications of Input Signals (HWBB Signals)
Signal
Type
Name
/HWBB1
Input
/HWBB2
The input signals (HWBB signals) have the following electrical characteristics.
Items
Internal impedance
Operation movable voltage
range
Maximum delay time
Note: Use a relay or switch that has micro-current contacts.
If the HWBB function is requested by turning OFF the /HWBB1 and /HWBB2 input signals on the two channels,
power supply to the motor will be turned OFF within 20 ms (see below).
/HWBB1
/HWBB2
SERVOPACK
State
Note 1. The OFF status is not recognized if the /HWBB1 and /HWBB2 signals are 0.5 ms or shorter.
2. The status of input signals can be checked with monitor display function. For details, refer to 8.7 Monitoring
Output Signals.
flows into the signal line.
rent flows into the signal line.
24 V power
supply
Switch
/HWBB1+ 4
Fuse
/HWBB1-
/HWBB2+
/HWBB2-
0 V
Pin Number State
ON
CN8-4
CN8-3
OFF
ON
CN8-6
CN8-5
OFF
Characteristics
3.3 kΩ
+11 V to + 25 V
20 ms
Within 20 ms
ON OFF
Normal operation
SERVOPACK
3
6
5
Meaning
Normal operation
Requires the HWBB function by using the hardwired cir-
cuits.
Normal operation
Requires the HWBB function by using the hardwired cir-
cuits.
Remarks
Time from the /HWBB1 and /HWBB2 signals are OFF to
the HWBB function operates.
HWBB state
5.11 Safety Function
5
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