M2LMS
P. / 3
EM-5048 Rev.3
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the con-
nection diagram on the side of the unit.
When an input resistor is provided with the module, attach
it together with input wiring to the input screw terminals.
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
13 – 14 with a multimeter.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
4) Output: Check that the load resistance meets the de-
scribed specifications.
ADJUSTMENT PROCEDURE
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, adjust the output as explained in the
following.
■
HOW TO CALIBRATE THE OUTPUT SIGNAL
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
1) ZERO: Apply 0% input and adjust output to 0%.
2) SPAN: Apply 100% input and adjust output to 100%.
3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the output
signal for the respective input signal remains within accu-
racy described in the data sheet. When the output is out of
tolerance, recalibrate the unit according to the “ADJUST-
MENT PROCEDURE” explained earlier.
■
FRONT PANEL CONFIGURATION
• How to Set High Limit
Turn the High/Low Limit Selector (C) to the top.
The High/Low Limit Display (B) shows the current high
limit (-10.0 – +105%). Press UP/DOWN Control (D) until
the display shows a desired set value.
The Polarity Indicator LED (A) is red when the set value is
in positive range, green when in negative range.
The high limit is factory set to 100%.
• How to Set Low Limit
Turn the High/Low Limit Selector (C) to the bottom.
The High/Low Limit Display (B) shows the current low lim-
it (-10.0 – +105%). Press UP/DOWN Control (D) until the
display shows a desired set value.
The Polarity Indicator LED (A) is red when the set value is
in positive range, green when in negative range.
The low limit is factory set to 0%.
INSTALLATION
Loosen the fixing screw at the front of the unit in order to
separate the body from the base socket.
■
DIN RAIL MOUNTING
Set the base socket so that
its DIN rail adaptor is at
the bottom. Position the
upper hook at the rear side
of base socket on the DIN
rail and push in the lower.
When removing the socket,
push down the DIN rail
adaptor utilizing a minus
screwdriver and pull.
■
WALL MOUNTING
Refer to “EXTERNAL DI-
MENSIONS.”
(C) High/Low Limit Selector
The front cover cannot be turned open by 180 deg.
when there is no extra space between units.
(A) Polarity Indicator LED
(B) High/Low Limit Display
(E) Zero Adj.
(F) Span Adj.
(D) UP/DOWN Control
Top: High Limit
Bottom: Low Limit
1
4
+
–
*
*
Input shunt resistor attached for current input.
INPUT
R
+
–
OUTPUT
9
12
U(+)
V(–)
POWER
13
14
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
Produkte, Support und Service
SENTRONIC
AG
