M2XU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-5008 Rev.7 P. 3 / 4
WIRING INSTRUCTIONS
■
SCREW TERMINAL
Torque: 0.8 N·m
■
SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm
2
(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Input range selector: Check that the switch is at the ap-
propriate position according to the input range model
suffix code.
3) Power input voltage: Check voltage across the terminal
13 – 14 with a multimeter.
4) Input: Check that the input wires are correctly connect-
ed to the input terminals according to the selected input
type.
5) Output: Check that the load resistance meets the de-
scribed specifications.
6) Status indicator LED: Check that it blinks in a regular
pattern.
HARDWARE ADJUSTMENTS
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any cali-
bration.
For matching the signal to a receiving instrument or in case
of regular calibration, fine zero and span adjustments can
be done to ±5% by pressing UP/DOWN switches enabled
with the zero/span selector switch. Calibrated values are
stored in the non-volatile memory, which will not be lost
even when you turn off power supply to the unit.
Zero and span are respectively set to 0% and 100% at the
factory.
UP/DOWN Switches
The front cover cannot be opened to 180 deg.
when flush with neighboring units.
Configurator Jack
■
FRONT VIEW (with cover open)
■
RIGHT SIDE VIEW
Status Indicator LED
Zero/Span Selector
Top: SPAN
Middle: OFF
Bottom: ZERO
Input Range Selector
Position H
Position L
: code S2, Z1
: other
Zero/Span Selector
ZERO
: UP/DOWN switches usable for zero adjustment.
OFF
: UP/DOWN switches unavailable.
SPAN
: UP/DOWN switches usable for span adjustment.
UP/DOWN Switches
(Incrementing speed will be doubled when the switch is
held down.)
UP
:
Pressing UP increases adjusted values.
DOWN
: Pressing DOWN decreases adjusted values.
■
HOW TO RESET
You can reset manually calibrated zero and span to their ex-
factory state by pressing both UP/DOWN switches at once.
■
HOW TO CALIBRATE ZERO/SPAN
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 20 minutes.
1) ZERO: Apply 0% input. Slide the Zero/Span Selector to
the bottom position. Press the UP or DOWN switches
and adjust output to 0%.
2) SPAN: Apply 100% input. Slide the Zero/Span Selector
to the top position. Press the UP or DOWN switches and
adjust output to 100%.
3) Check ZERO adjustment again with 0% input.
4) The ZERO and SPAN adjustments are processed in a
digital processor, and therefore do not interact. However,
if ZERO value is changed, repeat the above procedure 1)
– 3).
■
HOW TO CANCEL RESISTANCE IMBALANCES BETWEEN
RTD LEADWIRES
Resistance imbalances between RTD leadwires can be can-
celled by manipulating the Zero/Span Selector and UP/
DOWN switches.
1) Press and hold down the DOWN switch. Switch the
Zero/Span Selector to the bottom position and release
the DOWN switch. Check that the status indicator LED
which was blinking has turned ON.
2) Press the DOWN switch once and release to cancel any
resistance imbalances.
3) Return the Zero/Span Selector to the middle position.
The status indicator LED will start blinking again.
■
HOW TO CAPTURE THE POTENTIOMETER’S ZERO/SPAN
Particular positions of the potentiometer can be captured
(stored in memory) as ZERO (0%) or SPAN (100%) points by
manipulating Zero/Span Selector and UP/DOWN switches.
ZERO
1) Press and hold down the DOWN switch. Switch the
Zero/Span Selector to the bottom position and release
the DOWN switch. Check that the status indicator LED
which was blinking has turned ON.
2) Press the DOWN switch once and release to capture zero.
3) Return the Zero/Span Selector to the middle position.
The status indicator LED will start blinking again.
SPAN
1) Press and hold down the DOWN switch. Switch the Zero/
Span Selector to the top position and release the DOWN
switch. Check that the status indicator LED which was
blinking has turned ON.
2) Press the DOWN switch once and release to capture
span.
3) Return the Zero/Span Selector to the middle position.
The status indicator LED will start blinking again.
