Dynatest FWD - 5.2 Drop Heights Adjustment

2017.06.19 FwdMan2.8.17.docx 5-41
8) Check that the front end of the raise/lower bar is now resting properly on the ground.
9) Raise again the plate (subassy.) by pressing the RP button. Check that the raise/lower
bar is raised concurrently with the plate. Keep the RP button pressed until the plate
subassy. has reached its top position.
10) If the FWD is not at the measuring location, then lock and settle the plate subassy.:
Make sure the transport locks are engaged in BOTH sides, and then press LP/RW until
motor stops.
11) Lock the front end of the raise/lower bar.
12) Adjust the drop heights (if desired - see “Drop Heights Adjustment” below).
5.2 Drop Heights Adjustment
4 movable drop height stops (activators) are placed in a detachable, vertical rail on the drop
weight. A proximity switch is placed opposite to the stops, so that this switch (denoted “WH”
= Weight High) will be activated when any stop passes the switch.
SAFETY NOTE!
The plate subassy. must be in its top position and settled onto the transport locks
before (and during) any drop heights adjustment.
The topmost stop is denoted stop No. 1 (corresponding to h1 (drop height No. 1), as this will
be the first stop that passes the WH proximity switch when the weight is raised. The actual
drop height h1 can be monitored (with e.g. a steel measure) as the (Vertical) distance from the
TOP of stop No. 1 to the TOP of the WH proximity switch, WHEN THE WEIGHT is in its
LOW, RESTING POSITION.
Drop heights h2, h3 and h4 are monitored in the same manner as h1, as the distance from the
top of the stop in question to the top of the WH proximity switch, when the weight is in its
low position.
Within the field program, a “load targeting” feature can be selected, in which case it will
normally not be necessary to adjust the height stops at all, if they are positioned reasonably,
such as (approx.):
h1 = 50mm (2”), h2 = 100mm (4”), h3 = 200mm (8”), and h4 = 390mm (15-1/4”).
Obviously, h1 < h2 < h3 < h4. There are the following restrictions to the placing of the stops:
1) Although the stops are removable, ALL FOUR STOPS MUST BE PRESENT, as the
CP15 System Controller has been programmed to detect up to four WH pulses.
2) h1 should NOT be LESS THAN 50mm (1-1/2”) (to ensure proper triggering) and
NOT GREATER THAN 100mm (4”) (to prevent “raise weight time-out”).
3) The distance between two adjacent stops (centre to centre) should NOT be LESS
THAN 50mm (2”) (to ensure that the WH proximity switch will always be able to
separate adjacent stops).