EUCHNER HKC - Manual (Page 3)

Operating instructions for electronic handwheel HKC
Correct use
The EUCHNER handwheel is a universal pulse gen-
erator 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 Instruc-
tions.
Correct use includes compliance with the relevant
requirements for installation and operation, in
particular

EN 60204, electrical equipment of machines
 EN 12100, safety of machines, general design
principles

EN ISO 13849-1, safety-related parts of control
systems
Safety precautions
EUCHNER handwheels HKC meet the EMC protec-
tion requirements according to EN 61000-6-2 and
EN 61000-6-4.
Handwheels HKC must not be used for residential
applications, in business or commercial areas or
in small businesses.
Appropriate safety measures must be taken to
prevent a malfunction of the handwheel which
could cause danger to human beings or dam-
age to operating equipment.
Function
Two square-wave outputs of 100 or 25 pulses per
revolution are available for the user.
A second phase-shifted output allows the connected
control to detect the direction of movement.
The pulses are evaluated in the control.
The detent mechanism is magnetic and is therefore
totally wear-free.
Assembly
The unit may only be assembled by authorised
personnel.
The handwheel is assembled with nuts on 3 threaded
M3 bolts.
Fig. 1: Handwheel installation
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.

Apply shielding to handwheel screw terminal pin y.
 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.
Authorisation according to : operation with
power supply of UL-class 2 only, housing type
UL-type 1.
Service and inspection
EUCHNER handwheels require no maintenance.
Handwheels may only be repaired by the manu-
facturer.
To clean the handwheels, only use solvent-free clean-
ing 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 unautho-
rised personnel
 if the units are tampered with
Instructions for counting the handwheel
pulses: Handwheel HKC
The following options are recommended for counting
the handwheel pulses:

suitable counter module
 phase discriminator
Do not open the
handwheels!
Do not throw or drop the
handwheels!
Do not hit the handwheels!
Do not use tools on the
handwheels!