MG LPAUN User manual

EM-1998 Rev.2 P. 1 / 3
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
INSTRUCTION MANUAL
PHASE ANGLE TRANSDUCER
(for unbalanced load; self-powered) MODEL LPAUN
BEFORE USE ....
Thank you for choosing us. Before use, please check con-
tents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact our sales office or representatives.
■PACKAGE INCLUDES:
Signal conditioner ...............................................................(1)
■MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
POINTS OF CAUTION
■GENERAL PRECAUTIONS
• Before you remove the unit or mount it, turn off the input
signal for safety.
■ENVIRONMENT
• Indoor use.
• When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.
• Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
• Environmental temperature must be within -10 to +55°C
(14 to 131°F) with relative humidity within 30 to 85% RH
in order to ensure adequate life span and operation.
■WIRING
• Do not install cables close to noise sources (relay drive
cable, high frequency line, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■AND ....
• The unit is designed to function as soon as the input sig-
nal is supplied, however, a warm up for 10 minutes is re-
quired for satisfying complete performance described in
the data sheet.
COMPONENT IDENTIFICATION
Zero Adj.
Specifications
Connection Diagram
Body
Span Adj.
INSTALLATION
■DIN RAIL MOUNTING
Set the unit so that its DIN rail adaptor is at the bottom.
Position the upper hook at the rear side of the unit on the
DIN rail and push in the lower. When removing the unit,
push down the DIN rail adaptor utilizing a screwdriver (–)
and pull.
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
■WALL MOUNTING unit: mm (inch)
2–M5
60 (2.36)
60 (2.36)
■M5 SCREWS
2–M4
60 (2.36)
50 (1.97)
■ M4 SCREWS

LPAUN
EM-1998 Rev.2 P. 2 / 3
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the top of the unit.
■EXTERNAL DIMENSIONS unit: mm (inch)
112 (4.41) [3.3 (.13)]
35.4 (1.39)
DIN RAIL
35mm wide
8 (.31) M3.5 SCREW
(Only on the used terminals)
75 (2.95)
TERMINAL
COVER
2–5.8 (.23) dia. or
2–4.8 (.18) dia.
MTG HOLE
8 (.31) deep
•When mounting, no extra space is needed between units.
75 (2.95)
910111213141516
12 345678
3 (.12)1(.04)
■CONNECTION DIAGRAM
0
LOAD
123
SOURCE
P2V
P1U
v
u
FUSE VT
1L
1S
3L
3S
k
l
L
K
k
l
L
K
15
1
5
6
2
+
–
11
12
OUTPUT
■
3-PHASE/3-WIRE
LOAD
1N23
SOURCE
k
l
CT
L
K
1L
1S
2L
2S
3L
3S
k
l
L
K
k
l
L
K
14
+
–
11
12
OUTPUT
14
13
1
2
3
4
5
6
■ 3-PHASE/4-WIRE
P0V
P1U
v
u
FUSE VT
CT
CT
■TERMINAL ASSIGNMENTS
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16

LPAUN
EM-1998 Rev.2 P. 3 / 3
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
WIRING INSTRUCTIONS
■SCREW TERMINAL
Torque: 0.8 N·m
CHECKING
1 ) Terminal wiring: Check that all cables are correctly
connected according to the connection diagram.
2 ) Voltage input: Check that the input shows within 85 –
110% of the rated voltage.
3 ) Current input: Check that the input shows within 10 –
120% of the rated current.
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 input signal 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.
LIGHTNING SURGE PROTECTION
We offer a series of lightning surge protector for protec-
tion against induced lightning surges. Please contact us to
choose appropriate models.