Related Commands; Detecting Errors In Hwbb Signal; Hwbb Input Signal Specifications - YASKAWA SGD7S Product Manual

11.2.4

Related Commands

If the /HWBB1 or /HWBB2 signal turns OFF and the HWBB operates, the ESTP bit in the servo
command input signal monitor (SVCMD_IO) will change to 1. The host controller can monitor
this bit to determine the status.
If the state changes to the HWBB state during the execution of the next motion command, a
command warning occurs. If a warning occurs, clear the alarm to return to normal operating
status. After stopping or canceling the motion command, using the sequence of commands to
return to the HWBB status is recommended.
SV_ON (Servo ON)
INTERPORATE (Interpolating)
POSING (Positioning)
FEED (Constant Speed Feed)
EX_FEED (Constant Speed Feed with Position Detection)
LATCH (Interpolating with Position Detection)
EX_POSING (External Input Positioning)
ZRET (Origin Return)
11.2.5

Detecting Errors in HWBB Signal

If only the /HWBB1 or the /HWBB2 signal is input, an A.Eb1 alarm (Safety Function Signal Input
Timing Error) will occur unless the other signal is input within 10 seconds. This makes it possi-
ble to detect failures, such as disconnection of an HWBB signal.
 The A.Eb1 alarm (Safety Function Signal Input Timing Error) is not a safety-related element.
Keep this in mind when you design the system.
11.2.6

HWBB Input Signal Specifications

If an HWBB is requested by turning OFF the two HWBB input signal channels (/HWBB1 and
/HWBB2), the power supply to the Servomotor will be turned OFF within 8 ms.
/HWBB1
/HWBB2 ON (normal
operation)
SERVO-
PACK Status
Note: 1. The OFF status is not recognized if the OFF interval of the /HWBB1 or /HWBB2 signal is 0.5 ms or shorter.
2. You can check the status of the input signals by using monitor displays. Refer to the following section for
details.
9.2.3 I/O Signal Monitor on page 9-5
Applicable Motion Commands
8 ms max.
Normal operating status
11.2 Hard Wire Base Block (HWBB)
CAUTION
OFF (motor current
shut-OFF request)
HWBB state

11.2.4 Related Commands

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