Hartridge HK850 Bedienerhandbuch Seite 2

HARTRIDGE LIMITED
User Manual for HK850/HK851/HK852 Common Rail Signal Units
1. Safety issues
Follow the safety precautions normally applied to injector testing. These primarily are
to keep hands away from the nozzle and to avoid breathing the fumes.
The voltage output from the HK850/HK851/HK852 is less than 50V relative to earth, and is
therefore not a hazard.
Do not connect any other type of injector to the HK850/HK851/HK852; the injector may have
different current and voltage requirements and damage may result.
2. Description
The HK850 unit drives the BOSCH CR common rail electronic injector. The HK851 unit drives
the DENSO CR common rail electronic injector. The HK852 unit drives the DELPHI CR
common rail electronic injector. Two controls allow pulse rate and width to be altered. Typical
use is in conjunction with a Hartridge Testmaster for injector spray and back leakage testing.
The electronic injector will not fire unless it has both sufficient supply pressure (around 200 bar
minimum) and a current pulse to energise the coil. The HK850/HK851/HK852 provides the
current pulse required by the injector.
3. Protection
A green START and a red STOP button are used to latch the power stage on and off. When
power is applied to the injector, the red led STATUS indicator turns on. The STATUS light is
located between the START and STOP buttons. This arrangement ensures that the injector
cannot pulse without the action of pressing the START button. If power is interrupted, the
power stage is unlatched.
Two protection mechanisms check for correct current amplitude and pulse width. If either check
shows limits are exceeded, the power stage is unlatched and the STATUS indicator flashes to
warn of a fault. The fault condition is removed by turning the main switch off for 10 seconds.
4. Controls and connections
On the side of the unit;
IEC Power inlet socket to accept a range of standard connector leads.
120V/240V selector for nominal 115V/230V 50/60Hz AC single phase supply.
Power input fuse (2A anti-surge, 20mm*5mm)
Power ON/OFF switch
On the top of the unit;
Hz knob to adjust the pulse rate from zero to 10 pulse per second.
Pulse width knob to adjust the pulse width from 0.2ms to 3ms.
Green pushbutton to switch on the power to the injector.
Red pushbutton to switch off the power to the injector.
STATUS indicator to show that injector power is applied, (shows fault condition when
flashing).
PULSE light which turns on when current flows through the injector coil.
HL009b issue 2
THIS IS AN UNCONTROLLED DOCUMENT downloaded by Lukas Matuska on 16 Feb 2016
Any technical intervention requires certified Hartridge training. Contact Hartridge Ltd for details.
HK850/HK851/HK852 USER MANUAL
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