Walther prazision 91489, Working Instruction

Page: 32 / 191

Working instruction
english
typ 91489
Comments to application preparation
32
Unlocking procedure
1. Move the tool into the parking station by the robot in such a way that the center lines of the
parking areas (tool side) are in line with the center lines of the pick-up areas of the tool
parking station.
Approach up to a distance of 0 mm until parking position.
2. Reversal of the directional control valve(s) and extending of the piston of the locking cylin-
der.
3. Control status of locking controls
SE1R not switched
SE1V switched.
4. Lift the robot side out of the parking station by the robot. In doing so please
carry out a visual check (interrupt the movement of the robot if needed).
The tool side must not get caught at the robot side. If a failure is noticed the
movement of the robot must immediately be interrupted and the tool brought into
the starting position (parking station).If the failure is detected and eliminated
restart unlocking procedure as stated under item 1.
8.3.3 What happens in case of an EMERGENCY SHUTDOWN/voltage drop during
connection and/or disconnection process:
EMERGENCY SHUTDOWN with separation from compressed air network
1. The movement caused by energy (compressed air) is interrupted.
2. The started disconnection process ends without pressure, i.e. due to gravity tool side sinks
up into final position (tool parking station).
3. Due to gravity a reverse movement cycle occurs in case of started connection process (see
2.1).
EMERGENCY SHUTDOWN without separation from compressed air networkand/or voltage
breakdown (trouble)
1. with 5/3 directional control valve without safety circuit:
movement interruption.
2. with 5/2 impulse valve without safety circuit:
started connection/disconnection process is carried out without interruption.
3. with pneumatic safety circuit (2
nd
generation):
a started connection/disconnection process is carried out without interruption.
4. with electrical safety circuit