M-system Mini-M M2DYH Instruction Manual page 2

TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the side of the unit.
■ EXTERNAL DIMENSIONS unit: mm (inch)
21.5 (.85) 10 (.39)
■ CONNECTION DIAGRAM
+ 1
INPUT
– 4
2-WIRE XMTR
PWR SUPPLY
+ 5
*Hand-held communicator
When Used as DC Supply
– + + 1
250Ω
*
2-WIRE
– 4
HHC
XMTR
+
+ 5
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
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
3.3 (.13) max
84 (3.31)
114 (4.49)
4 – 20mA DC
9 +
*
R
OUTPUT HHC
L
12 –
13
U(+)
POWER
14
V(–)
When Used as Isolator
+ + 1 1
*
HHC INPUT
250Ω
– 4
+ 5
(AWG 22 to 16)
2
mm (inch)
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
DIN RAIL
35mm wide
2–4.2x5
(.17x.20)
MTG HOLE
6 (.24) deep
8–M3
SCREW
[4 (.16)]
• When mounting, no extra space is needed between units.
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.
For HART communication, the resistance must be 225 –
600 Ω.
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.
M2DYH
6 (.23)
4 1
8 5
12 9
14 13
15 (.59)
23 (.91)
EM-5027 Rev.6 P. 2 / 2