5
4) Allow time for the chemical to stop moving around in the
c
ylinder until you have a constant reading. Press and HOLD
the GROSS/NET keypad button for ~10 seconds until CAL
(calibrate) appears on the display. Release the button and
a numerical display with a blinking triangle will appear. The
number shown represents the GROSS weight and the blinking
triangle designates that you have entered the calibration mode.
5) Use the Up and DOWN (arrow) buttons to change the
displayed value to match the calculated GROSS WEIGHT.
6) Once the correct Gross Weight value is set, EXIT the
Calibration mode by Pressing and HOLDING the GROSS/NET
keypad button for ~10 seconds. After exiting, the Gross
weight will remain displayed with no blinking triangle.
7) Now Press and Release the GROSS/NET keypad button
to display the NET weight. A triangle (non-blinking) will
appear just left of the numerical display to confirm that
the Net Weight is being shown. Use the UP and DOWN
(arrow) buttons to adjust the displayed value to read
150 lbs. When changing the NET weight, it is necessary
to Press and Hold ONE of the arrow keys for ~5 seconds
before the monitor responds. Once activated, the keys will
respond accordingly. The delay is incorporated to help prevent
inadvertent changes from being made while the system is
in operation.
8) After the NET value is set, wait ~5 seconds and the
displayed value will flash as it "locks in". The scale is now
ready for operation.
NOTE: On a Dual Cylinder Scale, remember to switch (toggle)
to the second platform and proceed to complete the
calibration process.
When calibrating the scales for weight measures in kilograms (kg)
versus pounds (lbs.), simply enter the equivalent numerical value
for the Gross and Net weights when performing steps 3 through
7. For example, the Net weight for a standard 150 lb. cylinder
would be entered as 68 (kg). Entering these values simply sets
the range that will measure within, therefore, the true weight value
is automatically understood.
The analog output, representing the Net weight, will also need to
be changed from 150 (lbs.) to 68 (kg). The Low weight (10 lbs.)
and Cylinder Empty (2 lbs.) alarm settings should be changed as
well. Approximate values are sufficient. For example, 5 (kg) for
Low weight and 1 (kg) for Empty. To make all of these changes,
refer to steps 1, 3 and 4 under SWITCH SETTINGS on page 5.
1) To ensure accuracy, the scale should be calibrated each
time a cylinder is replaced. Once calibrated, simply press
the GROSS/NET keypad button to alternately display the
weight readings.
2) On a Dual Cylinder Scale, be sure to activate (toggle) each
platform separately to check the weight readings.
T
he main DIP switch (S1) with twelve settings is located on the
back side of the Display Circuit Board(s). See Drawing No. 3B. For
most applications, none of these settings need to be changed from
the factory settings. More specifically, Switches No. 1, 2, 5, 8, 9, 10,
11 and 12 should NEVER be changed. Switches No. 3, 4, 6 and 7
are explained below and should be changed only if necessary.
NOTE: The AC power supply must remain on when making
t
he following changes. Therefore, an experienced, licensed
technician is required.
1) Switch No. 3 is used to change the Full Scale of the 4-20
milliamp output. This applies when cylinders with a Net
Weight LESS than the factory set standard (150 lb.) are
going to be used on a regular basis. To change this
setting, turn switch No. 3 ON (closed). Then use the UP
and DOWN arrow buttons to adjust to the new (lower)
weight setting. Once the proper setting is displayed, turn
switch No. 3 OFF (open) to lock in the value.
IMPORTANT: When the Full Scale is changed, remember to
use the New Net Weight when performing Calibration Steps
No. 3 and 7.
2) Switch No. 4 is used to calibrate the 4-20 milliamp output
circuits for remote indication, data recording and SCADA
interface. Simply turn Switch No. 4 ON (closed) and use
the ZERO button to alternately display the 4 & 20 milliamp
points. Use a milliamp meter to check the readings for the
Channel(s)* located on the Power Supply Circuit Board
(See Drawing No. 3C). To make any necessary changes,
use potentiometers VR1 (span) and VR2 (zero) for
Channel #1. Use VR3 (span) and VR4 (zero) for Channel
#2. When the points are properly set, turn Switch No. 4
OFF (open) to lock in the new settings.
* On a Single Cylinder Scale (ECS401), only Channel #1 is
active.
3) Switch No. 6 is used if it is necessary to change the point
at which the Cylinder Empty LED (and Alarm Relay)
will turn on. The factory setting is 2.00 lbs. To change
this setting, turn Switch No. 6 ON (closed) and adjust
the value using the UP and DOWN arrow buttons. Once
the preferred setting is displayed, turn Switch No. 6 OFF
(open) to lock in the new value.
4) Switch No. 7 is used if it is necessary to change the point
at which the Low Weight LED (and Alarm Relay) will turn
on. The factory setting is 10.00 lbs. To change this setting,
turn Switch No. 7 ON (closed) and adjust the value using
the UP and DOWN arrow buttons. Once the preferred
setting is displayed, turn Switch No. 7 OFF (open) to
lock in the new value.
OPERATION
SWITCH SETTINGS
Only Needed for Custom Applications
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