EUCHNER HWB User Manual
Page 3
Operating instructions for electronic handwheel HWA/HWB
Safety precautions
Appropriate safety measures must be taken to
prevent a malfunction of the handwheel which could
cause danger to human beings or damage to
operating equipment.
Correct use
The EUCHNER handwheel is a universal pulse
generator for manual shaft positioning.
The handwheel is primarily used for positioning NC-
driven machine tools during set-up.
Handwheels are used as part of an overall higher-
level control system.
Their use, installation and operation are permissible
only in conformity with these operating instructions.
Correct use includes compliance with the relevant
requirements for installation and operation, in
particular
EN 12100, safety of machines, general design
principles
EN 60204, electrical equipment of machines
Incorrect use
Handwheels on their own must not be used as
safety components for avoiding hazardous states
in a machine installation.
Function
Two square-wave outputs of 100 or 25 pulses per
revolution are available for the user.
A second output phase-shifted by 90° allows the
connected controller to detect the direction of
movement.
The pulses are evaluated in the controller.
The detent mechanism is mechanical.
Assembly
The unit may only be assembled by authorised
personnel.
Do not open the hand-
wheels!
Do not throw or drop the
handwheels!
Do not hit the handwheels!
Do not use tools on the
handwheels!
Assembly of handwheel HWA
The handwheel is assembled via the center moun-
ting thread of the handwheel axis.
Fig. 1: Assembly of handwheel HWA
Assembly of handwheel HWB
The handwheel is assembled via 3 M4 set screws
on the handwheel flange.
Fig. 2: Assembly of handwheel HWB
Electrical connection
Electrical connection may only be performed by
authorised personnel trained in EMC with the
machine switched off and in de-energised
state.
The machine must be safeguarded against
reactivation.
If connected incorrectly, the handwheel
may be damaged.
Observe electrical characteristics and the pin
assignments (see technical data)
Always shield connecting leads.
Ground the shield at the end of the lead at a central
grounding point, e.g. in the distribution board or in
the control cabinet, over a large surface, with low
resistance and with low inductance.
Do not install connecting leads in the immediate
vicinity of interference sources.
When installing connections, the operator must
ensure compliance with the EMC safety require-
ments in accordance with EN 61000-6-4 and
EN 61000-6-2.
Service and inspection
EUCHNER handwheels require no maintenance.
Handwheels may only be repaired by the manufac-
turer.
To clean the handwheels, only use solvent-free
cleaning agents and a soft cloth.
Disclaimer of liability
The company does not accept liability regarding
the following cases:
if the unit is not used for its intended purpose
if the safety instructions are not followed
if the units are electrically connected by
unauthorised personnel
if the units are tampered with
Instructions for counting the handwheel
pulses: handwheels HWA and HWB
The following options are recommended for
counting the handwheel pulses:
suitable counter module
phase discriminator