ADLINK HSL-4XMO - Manual (Page 35)

Signal Connections 25
3.7 Alarm Signal ALM
The alarm signal ALM is used to indicate the alarm status from the
servo driver. The input alarm circuit is shown below. The ALM sig-
nal usually is generated by the servomotor driver and is ordinarily
an open collector output signal. An external circuit must provide at
least 6mA current sink capabilities to drive the ALM signal. For
more details of ALM signal operations, refer to section 4.7.
Figure 3-10: Alarm Signal ALM
3.8 Deviation Counter Clear Signal (ERC)
The deviation counter clear signal (ERC) is active in the following
4 situations:
1. Home return is complete
2. End-limit switch is active
3. An alarm signal stops OUT and DIR signals
4. An emergency stop command is issued by software
(operator)
The ERC signal is used to clear the deviation counter of the servo-
motor driver. The ERC output circuit is an open collector with a
maximum of 35V at 6mA driving capacity. For more details of ERC
operation, refer to section 4.7.