Installation of the ASTO board (Safe torque off, +Q967)
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Installation of the ASTO board (Safe torque off,
+Q967)
What this chapter contains
This chapter describes the electrical installation of the optional Safe torque off
function (+Q967) of the drive and the specifications of the board.
Safe torque off (+Q967)
The optional Safe torque off function includes an external ASTO board, which is
connected to the drive and an external power supply.
For more information on the Safe torque off function, see section Safe torque off
(option +Q967) on page 49 and ACS800-01/04/11/31/104/104LC Safe torque off
function (+Q967), Application guide (3AUA0000063373 [English]).
Installation of the ASTO board
WARNING! Dangerous voltages can be present at the ASTO board even when the
24 V DC supply is switched off. Follow the Safety instructions on the first pages of
this manual and the instruction in this chapter when working on the ASTO board.
Make sure that the drive is disconnected from the mains (input power) and the
24 V DC source for the ASTO board is switched off during installation and
maintenance. If the drive is already connected to the mains, wait for 5 min after
disconnecting mains power.
WARNING! The supply voltage for the ASTO-11C board is 24 V DC. If the board is
supplied with 230 V AC, the board is damaged and it needs to be replaced.
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