M-system Mini-MW Series Quick Start Manual page 5

TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the con-
nection diagram on the side of the unit.
+
INPUT
–
2-WIRE XMTR
PWR SUPPLY
+
–
MONITOR V
+
1 – 5V DC
The section enclosed by broken line is only with 2nd output option.
■ When Used as DC Supply
2-WIRE
TRANSMITTER
– + +
1
–
2
+ +
5
4
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
10 – 11 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.
EXTERNAL DIMENSIONS
23 (.91)
SEN TRONIC
AG
Produkte, Support und Service
+
1 7
OUTPUT 1
–
2 8
+
5 3
OUTPUT 2
4 6 –
10 U(+)
POWER
11
V(–)
■ When Used as Isolator
+
1
50Ω INPUT 50Ω
–
2
5
250Ω 250Ω
4
unit: mm (inch)
10 (.39) 84 (3.31)
Rugghölzli 2
CH - 5453 Busslingen
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).
5) Go through the same procedure for the Output 2.
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.
DIN RAIL
35mm wide
MTG HOLE
6 (.24) deep
114 (4.49) [4 (.16)]
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
6 (.23)
3 2 1
6 5 4
2–4.2x5
(.17x.20)
9 8 7
11–M3
SCREW
11 10
22 (.87)
29.5 (1.16)
mailbox@sentronic.com
www.sentronic.com
W2DYS