Rev. 1.4
Assembly Instructions - Micro Point Pulse Valve MPP-SPEED
Page 10 of 17
Walther Systemtechnik GmbH
– D 76726 Germersheim
Telefon: +49 (0)7274-7022-0 Telefax: +49 (0)7274-7022-91
http://www.walther-2000.de
6.3 Electrical Controls
The MPP-Speed pulsing valve works with a voltage of 24V DC and a material pressure of up to 50 bar. The
pulse valve is controlled via a control module (WLVC) (available as an accessory). ). To obtain a consistent
application pattern, the material supply must be kept constant.
Important
If high material pressures are required, the safety regulations of the trade association
must always
be observed.
In order to keep the heat development for the little opening times of the MPP Speed at a minimum and to
avoid overheating of the solenoid coil, controlling is done via the
“Peak- and Hold-“procedure. The pulsing
valve is precisely opened with a temporarily increased peak current. After opening, a low holding current is
enough to keep the valve open. Due to the very small opening times and the
“Peak- and Hold-Function“, it is
necessary to additionally integrate the WLVC control (if the existing control cannot fulfill this function).
CAUTION
The “Peak- and Hold-Function“ must be used for all MPP-Speed valves. Otherwise, the
valve coil overheats and is destroyed.
(Impulse time = 400µs Holding voltage in % = 12)
