M-system 48NDVA User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 1 / 9
INSTRUCTION MANUAL
BARGRAPH INDICATING ALARM
(with 4-digit digital meter; with isolated DC output) MODEL 48NDVA
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■PACKAGE INCLUDES:
Bargraph indicator (incl. scale plate).................................(1)
Mounting bracket................................................................(2)
Bezel*1..................................................................................(2)
Watertight packing .............................................................(1)
*1. The size of included bezel differs depending on option code.
■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.
For detailed explanations to operate and program the
module, please refer to Model 48NDVA Operating Manual
(EM-9441-B), downloadable at M-System’s web site: http://
www.m-system.co.jp.
POINTS OF CAUTION
■CONFORMITY WITH EU DIRECTIVES
• This equipment is suitable for Pollution Degree 2, Meas-
urement category II (alarm output, transient voltage
2500V) and Installation Category II (transient voltage
2500V). Reinforced insulation (signal input to alarm out-
put to power input and DC output to power input: 300V)
is maintained. Prior to installation, check that the insu-
lation class of this unit satisfies the system requirements.
• The equipment must be mounted on a panel surface.
Once mounted on a panel, take appropriate precautions
to prevent operators to be exposed to the terminal block.
• Altitude up to 2000 meters.
• Insert a noise filter for the power source connected to the
unit. TDK-Lambda Noise Filter Model RSAN-2006 or
equivalent is recommended.
• The equipment must be installed such that appropriate
clearance and creepage distances are maintained to con-
form to CE requirements. Failure to observe these re-
quirements may invalidate the CE conformance.
• The actual installation environments such as panel con-
figurations, connected devices, connected wires, may af-
fect the protection level of this unit when it is integrated
in a panel system. The user may have to review the CE
requirements in regard to the whole system and employ
additional protective measures to ensure the CE conform-
ity.
• In order to enable the operator to turn off the power in-
put immediately, install a switch or a circuit breaker ac-
cording to the relevant requirements in IEC 60947-2 and
properly indicate it.
■POWER INPUT RATING & OPERATIONAL RANGE
• Locate the power input rating marked on the product and
confirm its operational range as indicated below:
100 – 240V and 85 – 264V AC rating: 85 – 264V,
50/60 Hz, approx. 5.5 – 8VA
24V DC rating: 24V ±15%, approx. 3.5W
■GENERAL PRECAUTIONS
• Before you remove the unit or mount it, turn off the power
supply and input signal for safety.
• Be sure to put the terminal cover on while the power is
supplied.
■ENVIRONMENT
• Indoor use.
• If the unit’s environmental protection is compromised
(e.g. when multiple units are to be mounted side by side)
when heavy dust or metal particles are present in the air,
install them inside an enclosure with a proper ventila-
tion.
• 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 -5 to +55°C
(23 to 131°F) with relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
■REQUIREMENTS TO ENSURE IP65
• Observe the designated panel cutout size (31.5 × 138 mm).
• Single mounting only. IP65 is not ensured when the units
are clustered side by side.
• The watertight packing included in the product package
must be placed behind the front cover.
• The mounting bracket must be fastened tightly until they
hit the panel.
• Confirm visually that the packing is not contorted or ex-
cessively run off the edge after installation.
■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.
■TERMINAL BLOCK
• The terminal block is separable in two pieces. Loosen two
screws on top and bottom of the terminal block to sepa-
rate.
• Be sure to turn off the power supply, input signal and
power supply to the output relays before separating the
terminal block.
Terminal Block
Separable
Terminal Block Screw
(top & bottom)

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 2 / 9
■AND ....
• The unit is designed to function as soon as power is sup-
plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.
COMPONENT IDENTIFICATION
50
40
30
20
10
0
10
20
30
40
50
m
3
/h %
mA
100 SET
H
S
P
Z
L
90
80
70
60
50
40
30
20
10
0
M
Brackets
Body
A
Scale Plate
Pull up the part ‘A’ when replacing the scale plate.
INSTALLATION
■PANEL CUTOUT unit: mm
138 +1
–0
31.5
Note 1: Observe at the minimum of 3 cm above and below the units
for heat dissipation.
Note 2: No bezel is needed when the panel is cut according to the
above drawings.
Panel thickness: 1.6 – 8.0 mm
■ SINGLE MOUNTING
(Conform to degree of protection IP65)
138 +1
–0
L
Panel thickness: 1.6 – 8.0 mm
L = {31.5 + 36 × (N –1)}
(N : number of units)
+1
–0
■ CLUSTERED MOUNTING
(Not conform to degree of protection IP65)
+1
–0
61.5 min.
■USING BEZELS
Bezels are used when the unit needs to be adapted to an ex-
isting panel cutout. It is not required when the panel cutout
size is as specified in the unit’s data sheet (31.5 × 138 mm).
Three types of bezels are selectable when ordering.
Standard type: Fits into M-System’s 48 Series’ panel
cutout (38 × 139.5 mm)
Option /D type: Fits into DIN panel cutout
(33 × 138 mm)
Option /F type: Fits into Fuji Electric PAJ, PAK, PBA,
etc, panel cutout (44 × 138 mm)
Slide the top and bottom parts of the bezel into the back of
the front cover as shown below.
Bezel
When multiple units are to be clustered side by side, insert
one bezel between two units as shown below.
• When mounting two or more indicators side by side:
■HOW TO MOUNT THE UNIT ON A PANEL
1) Insert the unit into the panel cutout. The watertight
packing must be in place to hold the unit. Do not remove
it even when the protection is not required.
The IP65 front cover protection is effective only with sin-
gle mounting, with the designated cutout size (31.5 ×138
mm).
Panel
Watertight Packing

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 3 / 9
2) Push the mounting brackets into the grooves on top and
bottom of the rear module, until they hit the panel’s rear
side.
Leave at least 3 centimeters both above and below the
unit for ventilation.
Bracket
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)
75 (2.95)
103 (4.06)
10 (.39) 18
(.71)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16–M3 SCREW
TERMINALS
2–M3 SCREWS
144 (5.67)
137.5 (5.41)
4
*1
(.16)
36 (1.42) 31 (1.22)
100 (3.94)
Rounded corners for the option /D
■OPTION /D BEZEL*3
*1. Space required when replacing the scale plate.
*2. Used for the existing panel cutout of M-System 48 Series (38 ×139.5 mm).
*3. Used for the existing DIN panel cutout (33 ×138 mm)
*4. Used for the existing panel cutout of Fuji Electric PAJ, PAK, PBA (44 ×138 mm), etc.
■STANDARD BEZEL*2
10.4
(.41)
7.5
(.30)
3.9
(.15)
136.5 (5.37)
144 (5.67)
11.4
(.45)
7.5
(.30)
4.9
(.19)
136.5 (5.37)
144 (5.67)
8.5
(.33)
10.4
(.41)
7.5
(.30)
136.5 (5.37)
144 (5.67)
■OPTION /F BEZEL*4

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 4 / 9
75 (2.95)
103 (4.06)
10 (.39) 18
(.71)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16–M3 SCREW
TERMINALS
2–M3 SCREWS
144 (5.67)
137.5 (5.41)
4
*1
(.16)
36 (1.42) 31 (1.22)
100 (3.94)
Rounded corners for the option /D
■OPTION /D BEZEL*3
*1. Space required when replacing the scale plate.
*2. Used for the existing panel cutout of M-System 48 Series (38 ×139.5 mm).
*3. Used for the existing DIN panel cutout (33 ×138 mm)
*4. Used for the existing panel cutout of Fuji Electric PAJ, PAK, PBA (44 ×138 mm), etc.
■STANDARD BEZEL*2
10.4
(.41)
7.5
(.30)
3.9
(.15)
136.5 (5.37)
144 (5.67)
11.4
(.45)
7.5
(.30)
4.9
(.19)
136.5 (5.37)
144 (5.67)
8.5
(.33)
10.4
(.41)
7.5
(.30)
136.5 (5.37)
144 (5.67)
■OPTION /F BEZEL*4
■CONNECTION DIAGRAM
1
2
12
13
14
INPUT
+
–
15
16
7
8
9
■ ALARM OUTPUT CODE 2: 2 points
1
2
INPUT
+
–
5
6
5
6
1
2
INPUT
+
–
5
6
15
16
■ ALARM OUTPUT CODE 0: None ■ ALARM OUTPUT CODE 4: 4 points
12
13
14
15
16
LLa
11
La
LLb
Lc, LLc
8
9
10
HHa
7Hc, HHc
HHb
Ha
HH OUTPUT
H OUTPUT
LL OUTPUT
L OUTPUT
U(+)
V(–)
La
Lb
Lc
Hc
Ha
Hb
H OUTPUT
L OUTPUT
+
–
POWER
DC OUTPUT
+
–
DC OUTPUT
+
–
DC OUTPUT
U(+)
V(–)
POWER
U(+)
V(–)
POWER
• DC Powered
■ Relay Protection
• AC Powered
LOAD
Inductive
Load (Coil)
Varistor or Spark
Quenching Circuit
U
LOAD
Inductive
Load (Coil)
Diode, Varistor or
CR Circuit

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 5 / 9
FRONT PANEL CONFIGURATION
50
40
30
20
10
0
-10
-20
-30
-40
-50
m3/h %
mA
100 SET
2
S
P
Z
1
90
80
70
60
50
40
30
20
10
0
SET (ENTER) Button
Color Setpoint 2 Adj. & Function
Span Adj. & Setting
Decimal Point Position, Moving Average,
Brightness Adj.
Zero Adj. & Setting
Color Setpoint 1 Adj. & Function
Setting UP Button, Switcing Detailed Settings
Mode & Setting Selector
Setting DOWN Button, Switcing Detailed Settings
Digital Indicator
Setpoint 2 Value
Setpoint 1 Value
PV Indicator M
Note: Setpoint 1 or 2 provided only for the multi-color bar type.
■ALARM OUTPUT CODE 0: None • Bar Color Patterns
Pattern 1 (Bar LED color code 1)
orange orange
green
orange
Input < LL< Input < H H < Input
green
red
H
L
Pattern 2 (Bar LED color code 2)
orange green
green
red
red
red
H
L
50
40
30
20
10
0
-10
-20
-30
-40
-50
m3/h %
mA
100 SET
H
S
P
Z
L
90
80
70
60
50
40
30
20
10
0
SET (ENTER) Button
H Setpoint Adj. & Alarm Function
Span Adj. & Setting
Decimal Point Position, Moving Average,
Brightness Adj.
Zero Adj. & Setting
L Setpoint Adj. & Alarm Function
Setting UP Button, Switcing Detailed Settings
Mode & Setting Selector
Setting DOWN Button, Switcing Detailed Settings
H Setpoint
L Setpoint
PV Indicator M
50
40
30
20
10
0
-10
-20
-30
-40
-50
m3/h %
mA
100 SET
H
S
P
Z
L
90
80
70
60
50
40
30
20
10
0
SET (ENTER) Button
HH Setpoint Adj. & Alarm Function
H Setpoint Adj. & Alarm Function
Span Adj. & Setting
Decimal Point Position, Moving Average,
Brightness Adj.
Zero Adj. & Setting
L Setpoint Adj. & Alarm Function
LL Setpoint Adj. & Alarm Function
Setting UP Button, Switcing Detailed Settings
Mode & Setting Selector
Setting DOWN Button, Switcing Detailed Settings
HH Setpoint
H Setpoint
L Setpoint
LL Setpoint
PV Indicator
HH
LL
M
■ALARM OUTPUT CODE 2: 2 points
Digital Indicator
■ALARM OUTPUT CODE 4: 4 points
Digital Indicator

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 6 / 9
ADJUSTMENT PROCEDURE
L SET L
M
Increase / Decrease
L Setpoint Complete
LL SET LL
M
Increase / Decrease
LL Setpoint Complete
H
MPress at once
ON Time Delay for
H Setpoint
Increase / Decrease
Complete
Digital Indicator
H SET H
M
Increase / Decrease
H Setpoint Complete
HH SET HH
M
Increase / Decrease
HH Setpont Complete
2 SET 2
M
Increase / Decrease
Increase / Decrease
Setpoint 2 Complete
1 SET 1
M
Setpoint 1 Complete
LED OFF
LED OFF
LED BlinkingMode Selector *1
UP / DOWN Button
UP / DOWN Button
LED BlinkingMode Selector *1UP / DOWN Button
LED BlinkingMode Selector *1UP / DOWN Button
LED BlinkingMode Selector *1
■ZERO ADJUSTMENT: Apply 0% input signal before adjustment. All alarm setpoints will be reset after the adjustment.
SET H
HH
MPress at once
ON Time Delay for
HH Setpoint
Increase / Decrease
Complete
Digital Indicator
SET HH
L
MPress at once
ON Time Delay for
L Setpoint
Increase / Decrease
Complete
Digital Indicator
SET L
LL
MPress at once
ON Time Delay for
LL Setpoint
Increase / Decrease
Complete
Digital Indicator
SET LL
Z
MPress at once
Zero Adjustment
Digital Indicator / Bargraph
Z SET Z
M
Increase / Decrease
Zero Adjustment
Digital Indicator Only Complete
Z
ON
LED OFF
■SPAN ADJUSTMENT: Apply 100% input signal before adjustment. All alarm setpoints will be reset after the adjustment.
S
LED OFF
■DECIMAL POINT POSITION
■ALARM SETTING: Proceed after the zero / span adjustments and the decimal point position setting.
• 48NDVA-4, 48NDVA-2 *2
• 48NDVA-0 *3
*1. Keep pressing at least for 3 seconds to activate Mode Selector M. Press briefly for second and more times within 1 minute after it has been activated.
*2. HH or LL setpoints are not provided for the 48NDVA-2.
*3. 1 or 2 setpoints are not provided for the 48NDVA-0R, -0Y, -0G or -0B.
Note: Each setting sequence is complete only when SET button is pressed. Once set, parameters are not lost even after the power is removed.
MPress at once
Span Adjustment
Digital Indicator / Bargraph
S SET S
M
Increase / Decrease
Span Adjustment
Digital Indicator Only Complete
S
ON
P SET
M
Increase / Decrease
Decimal Point Position Complete
P

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 7 / 9
LED OFF LED BlinkingMode Button *1UP / DOWN Button
■MOVING AVERAGE SAMPLE NUMBERS
P
MPress at once
Moving Average
Sample Numbers
Increase / Decrease
Complete
Digital Indicator
SET P
LED OFF LED BlinkingMode Button *1UP / DOWN Button
■LED BRIGHTNESS ADJUSTMENT
P
M
Press at once
LED Brightness Adjustment
Increase / Decrease*2
Complete
Digital Indicator
SET P
Digital Indicator
Press at once
*1. Keep pressing at least for 3 seconds to activate Mode Button M. Press briefly for second and more times within 1 minute after it has been activated.
*2. Pressing UP or DOWN button shifts the LED brightness in 7 levels. Factory default is set to 7, the brightest level.
*3. Keep pressing DOWN button at least for 5 seconds to enter the simulated output mode.
*4. Pressing UP or DOWN button simulates the output between 000.0 and 100.0%.
*5. Keep pressing SET button at least for 5 seconds to exit the simulated output mode.
Note: Each setting sequence is complete only when SET button is pressed. Once set, parameters are not lost even after the power is removed.
■DC OUTPUT FINE ZERO/SPAN ADJUSTMENTS: Set after input 0 % and 100 %. After performing, all alarm settings are cleared.
■SIMULATED OUTPUT
Simulated Output
Increase / Decrease*4
Complete
SET
LED Blinking
DOWN Button*3Z
S
LED OFF
Z
S
*5
LED Blinking
0% Output Adjustment
UP / DOWN Button
Z
M
Press at once
Z
Press at once
Increase / Decrease
Complete
SET Z Z
LED ON
LED Blinking
(double speed)
100% Output Adjustment S
M
Press at once
S
Press at once
Increase / Decrease
Complete
SET S S
LED ON
LED Blinking
(double speed)
Mode Button *1LED OFF
Digital Indicator
Digital Indicator

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 8 / 9
■BARGRAPH / DIGITAL INDICATOR ZERO ADJUSTMENT
1) Apply 0% input signal.
2) Hold down [M] for 3 seconds*1and push [M] to choose [Z].
3) Press [UP] and [DOWN] buttons at once. (Blinking Z
LED is switched to continuous ON state.)
4) Press [UP] or [DOWN] buttons until the bargraph shows
0%, and the digital indicator comes to a desired value,
and press [SET].
■DIGITAL INDICATOR ZERO ADJUSTMENT
1) Hold down [M] for 3 seconds*1and push [M] to choose [Z].
2) Press [UP] or [DOWN] buttons until the digital indicator
comes to a desired value, and press [SET].
■BARGRAPH / DIGITAL INDICATOR SPAN ADJUSTMENT
1) Apply 100% input signal.
2) Hold down [M] for 3 seconds*1and push [M] to choose [S].
3) Press [UP] and [DOWN] buttons at once. (Blinking S
LED is switched to continuous ON state.)
4) Press [UP] or [DOWN] buttons until the bargraph shows
100%, and the digital indicator comes to a desired value,
and press [SET].
■DIGITAL INDICATOR SPAN ADJUSTMENT
1) Hold down [M] for 3 seconds*1and push [M] to choose [S].
2) Press [UP] or [DOWN] buttons until the digital indicator
comes to a desired value, and press [SET].
■DECIMAL POINT POSITION
1) Hold down [M] for 3 seconds*1and push [M] to choose [P].
2) Press [UP] or [DOWN] buttons until the decimal point
comes to a desired position, and press [SET].
■ALARM SETPOINT ADJUSTMENTS
• 48NDVA-2: H [L setpoint] to 100%
L 0% to [H setpoint]
No alarm trip is selectable
• 48NDVA-4: HH [H setpoint] to 100%
H [L setpoint] to [HH setpoint]
L [LL setpoint] to [H setpoint]
LL 0% to [L setpoint]
No alarm trip is selectable
• How to Set LL (or L, H, HH, 1, 2) Setpoints
1) Hold down [M] for 3 seconds*1and push [M] to choose
[LL].
2) Press [UP] or [DOWN] buttons until the digital indicator
comes to the desired value, and press [SET].
(Same procedure for L, H, HH, 1, 2 setpoints)
• How to Cancel HH and H Alarms
1) Press [UP] or [DOWN] buttons until the indicator comes
to the upper limit (digital indicator shows “----”), and
press [SET].
HH indicator must be set before H as the H setpoint can-
not go above the HH setpoint.
• How to Cancel LL and L Alarms
1) Press [UP] or [DOWN] buttons until the indicator comes
to the lower limit (digital indicator shows “----”), and
press [SET].
LL indicator must be set before L as the L setpoint can-
not go below the LL setpoint.
■LL (or L, H, HH, 1, 2) ALARM ON TIME DELAY
1) Hold down [M] for 3 seconds*1and push [M] to choose
[LL].
2) Press [UP] and [DOWN] buttons at once. Current setting
value in seconds is shown at the right end of the digital
indicator, with ‘d.’ at the left end.
Factory default setting is “0”.
3) Press [UP] or [DOWN] buttons until the meter shows the
desired value, and press [SET]. (The range between 0 to
15 sec. can be set.)
(Same procedure for L, H, HH, 1, 2 setpoints)
■MOVING AVERAGE SAMPLE NUMBER
1) Hold down [M] for 3 seconds*1and push [M] to choose [P].
2) Press [UP] and [DOWN] buttons at once. Current setting
value is shown at the right end of the digital indicator,
with ‘A.’ at the left end.
Factory default setting is “4”.
3) Press [UP] or [DOWN] buttons until the indicator shows
the desired value (1, 2, 4, 8 or 16), and press [SET].
■LED BRIGHTNESS ADJUSTMENT
1) Hold down [M] for 3 seconds*1and push [M] to choose [P].
2) Press [UP] and [DOWN] buttons at once for two times.
Current setting value is shown on the digital indicator,
with ‘c.’ at the left end. Factory default setting is ‘7,’ the
brightest.
3) Press [UP] or [DOWN] buttons until the indicator shows
the desired setting (1 through 7), and press [SET].
■DC OUTPUT FINE ZERO ADJUSTMENT (0%)
1) Apply 0% input signal.
2) Hold down [M] for 3 seconds*1and push [M] to choose [Z].
3) Press [UP] and [DOWN] buttons at once for two times
until the Z indicator changes from blinking to solid to
blinking in double speed. Digital indicator shows “_ _ _ _”
and it blinks.
4) Press [UP] or [DOWN] buttons to show a desired value at
the receiving instrument, and press [SET].
■DC OUTPUT FINE SPAN ADJUSTMENT (100%)
1) Apply 100% input signal.
2) Hold down [M] for 3 seconds*1and push [M] to choose [S].
3) Press [UP] and [DOWN] buttons at once for two times
until the S indicator changes from blinking to solid to
blinking in double speed. Digital indicator shows “_ _ _ _”
and it blinks.
4) Press [UP] or [DOWN] buttons to show a desired value at
the receiving instrument, and press [SET].

48NDVA
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-9441-A Rev.9 P. 9 / 9
■SIMULATED OUTPUT
1) Hold down [DOWN] for longer than 5 seconds to enter
the simulation mode until the Z and S indicators start
blinking, and the digital indicator shows ‘000.0,’ blinking.
2) Press [UP] or [DOWN] buttons to simulate a desired DC
output. Digital indicator is programmable from ‘000.0’ to
‘100.0’ %*2.
3) Hold down [SET] for longer than 5 seconds to get out of
the simulation mode.
*1. The [M] button remain activated for 1 minute after it
has been used to choose a indicator LED (programming
mode). During this period, pressing the [M] button briefly
is enough to choose another indicator. After 1 minute, it
turns to deactivated state.
*2. The bargraph goes off.
CALIBRATION 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 indication to a receiving instrument or in
case of regular calibration, adjust the output as explained
in the following.
■HOW TO CALIBRATE THE OUTPUT INDICATION
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 the bargraph, digital
indicator and DC output to 0% following the each proce-
dure explained in “ADJUSTMENT PROCEDURE.”
2) SPAN: Apply 100% input and adjust the bargraph, digi-
tal indicator and DC output to 100% following the same
procedure.
3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
MAINTENANCE
Regular checking procedure is explained below:
■CHECKING
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the bargraph,
digital indicator and DC output for the respective input sig-
nal remains within accuracy described in the data sheet.
When the bargraph, digital indicator and DC output are out
of tolerance, recalibrate the unit according to the “CALI-
BRATION PROCEDURE” explained earlier.
WIRING INSTRUCTIONS
■SCREW TERMINAL
Torque: 0.6 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 mm2(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protectors for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.