172-65256M-00 (VFM-T2) 7 Sep 2001
11
Internal Construction
For pulse type, the motherboard is of 2-board construction, containing a “display
board” and a “power board”. Analog type (optional) is of 3-board construction,
containing the addition of an “F/I board”. The power board and F/I board are
connected by individual connectors to the display board.
The external connection terminals are found on the rear of the counter.
Removing the Internal Components
<Caution> Be sure to perform this operation with the power supply turned
OFF.
NOTE: Disconnect all wiring from the counter unit.
1) Remove the panel-mount
fitting, and then pull the unit out
from the front of the panel.
2) Remove the screws from
the rear plate, and then take
the rear plate off.
3) Pull the internal unit
out to the rear.
Waveform Shaping Function
Specifications for Type of Pulse Input and Input Settings
Jumper Set Points
Type of Pulse
Input
J2
J5
J1
J3
J4
Power to
Transmitter
Input
Impedance
Current Pulse 3 – C Uncoupled
*1
*2
*3
24V DC
510
Ω
NOTE: *1: Couple to increase the waveform shaping filter approximately 10 times.
*2: This jumper is used to select the pulse output specifications.
Synchronized input (1/1) : A – C
Scaled (display units) : B – C (STD.)
→→
See the next section.
*3: A microprocessor input speed with a maximum of 200Hz is required. It may
be necessary to set “hard” dividing prior to the processor input. Divide by
one of the following: 1/1, 1/10 or 1/100.
→→
See the next section.
F/I Board (Optional)
Terminal Blocks
Display Board
Power Board
Panel-mount Fitting
Rear Plate
Internal Unit
