M-system AS4LC User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-1601 Rev.7 P. 1 / 6
INSTRUCTION MANUAL
STRAIN GAUGE ALARM
(dual or quad alarm trip; eld-congurable) MODEL AS4LC
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:
Strain gauge alarm (body + base socket)...........................(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
■CONFORMITY WITH EU DIRECTIVES
• This equipment is suitable for Pollution Degree 2, Meas-
urement Category II (output, transient voltage 2500V)
and Installation Category II (transient voltage 2500V).
Basic insulation (signal input to output to power input:
300V) is maintained. Prior to installation, check that the
insulation class of this unit satisfies the system require-
ments.
• Altitude up to 2000 meters.
• The equipment must be mounted inside a panel.
• Insert a noise filter for the power source connected to the
unit. TDK-Lambda Noise Filter Model RSNA-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.
• Install lightning surge protectors for those wires connect-
ed to remote locations.
■POWER INPUT RATING & OPERATIONAL RANGE
• Locate the power input rating marked on the product and
confirm its operational range as indicated below:
100 – 240V AC rating: 85 – 264V,47 – 66 Hz, approx.11VA
24V DC rating: 24V ±10%, approx. 8W
110V DC rating: 85 – 150V, approx. 8W
■GENERAL PRECAUTIONS
• Before you remove the unit from its base socket or mount
it, turn off the power supply and 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 -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.
■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.
■EXCITATION
• Be sure to use the excitation of the unit.
• Adjust excitation voltage so that the current is below the
maximum current of the excitation.
■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
Body
Specifications
Base Socket
Connection Diagram
INSTALLATION
Detach the yellow clamps located at the top and bottom of
the unit for separate the body from the base socket.
Clamp
(top & bottom)
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
Shape and size of the base socket
are slightly different with various
socket types.
■DIN RAIL MOUNTING
Set the base socket so that its
DIN rail adaptor is at the bot-
tom. 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.”

AS4LC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-1601 Rev.7 P. 2 / 6
FRONT VIEW & PROGRAMMING
■PROGRAMMING PROCEDURE
1) Press ITEM UP or DOWN key until ITEM display indicates “01”.
2) Press DATA UP or DOWN key and choose “1” or “2” on DATA dis-
play.
1: Only alarm setpoints are modifiable.
2: All parameters are modifiable.
3) Press ITEM UP or DOWN key until ITEM display shows the
ITEM No. you need to change.
4) Press DATA UP or DOWN key and choose a DATA No. or value
you need on DATA display.
5) Repeat above 3 and 4. (Entered data is stored when you move to
a new ITEM.)
6) Press ITEM UP or DOWN key until ITEM display indicates “01”.
7) Press DATA UP or DOWN key and choose “0” on the display.
8) Press ITEM UP or DOWN key until ITEM display indicates “P”.
DATA display shows process input.
(You can now check data setting by choosing ITEM No.)
Note: DO NOT press UP and DOWN keys simultaneously.
ITEM MDF.
CODE
DATA CONTENTS DEFAULT SETTING
P N/A -1999 – 9999 Process input display in engineering unit (as set in ITEM 07/08) ----
L1
L2
L3
L4
1, 2
1, 2
1, 2
1, 2
-1999 – 9999*1
-1999 – 9999*1
-1999 – 9999*1
-1999 – 9999*1
L1 alarm setpoint in engineering unit
L2 alarm setpoint in engineering unit
L3 alarm setpoint in engineering unit *2
L4 alarm setpoint in engineering unit *2
Quad: 20.0
Quad: 30.0
Quad: 70.0
Quad: 80.0
Dual: 20.0
Dual: 80.0
01 0, 1, 2 Modification code
0: Data indication only.
1: Only ITEM L1 – L4 are modifiable.
2: All parameters are modifiable.
1
02 N/A 0 – 99 Status indication (“0” is normally indicated.)
0: Normal 1: Memory error 10: Out of input range -15 – +115%
03 N/A 0, 1, 2 Input range code 0: S1 (0.0 – 3.0mV/V)
1: S2 (0.0 – 10.0mV/V)
2: S3 (0.0 – 30.0mV/V)
User specified
04 N/A 0, 1, 2 Output range code 0: 2 (Quad N.O.)
1: 3 (Quad N.C.)
2: 5 (Dual SPDT)
User specified
05 2 0.1 – 12.0 Excitation voltage (V) 1.0V
06 2 0.010 – 3.000
0.010 – 9.999
0.10 – 30.00
Sensor sensitivity S1: 0.0 – 3.0mV/V
S2: 0.0 – 10.0mV/V
S3: 0.0 – 30.0mV/V
3.000
9.999
30.00
Used when adjusting the sensor sensitivity by its rating value.
Set ITEM 07 before 06.
07 2 -19.99 – 30.00
-19.99 – 99.99
-199.9 – 300.0
0% input voltage S1: -19.99 – 30.00mV
S2: -19.99 – 99.99mV
S3: -199.9 – 300.0mV
Sensor’s zero adjustment. Approximate offset voltage.
08 2 -19.99 – 30.00
-19.99 – 99.99
-199.9 – 300.0
100% input voltage S1: -19.99 – 30.00mV
S2: -19.99 – 99.99mV
S3: -199.9 – 300.0mV
Used when adjusting the sensor sensitivity with an actual load.
Set ITEM 07 before 08.
09 2 10.0 – 100.0 Load ratio (%)
Used when adjusting the sensor sensitivity with an actual load.
100.0
10 2 -199.9 – 999.9 Tare adjustment (%) 0.0
11 N/A -15.0 – 115.0 Input indicated in % (of the range set in ITEM 06/07/08) ----
PL4
PL3
PL2
PL1
DATA
ITEM
ITEM No. Display
*Monitor LEDs
DATA Display
*PL3 or PL4 does not turn on for dual output type.
DATA
ITEM
DATA UP-DOWN Keys
ITEM No. UP-DOWN Key
s

AS4LC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-1601 Rev.7 P. 3 / 6
ITEM MDF.
CODE
DATA CONTENTS DEFAULT SETTING
12
13
2
2
-19.99 – 99.99
0.000 – 9.999
Zero adjustment (%) (fine adj. of the value set in ITEM 06/07/08)
Gain adjustment (fine adj. of the value set in ITEM 06/07/08)
0.00
1.000
14
15
2
2
-1999 – 9999
-1999 – 9999
Display range scaling 0% *3
Display range scaling 100% *3
0.0
100.0
16 2 0, 1, 2, 3 Decimal point position
(Specify the number of
digits)
0: _ _ _ _
1: _ _ _ . _
2: _ _ . _ _
3: _ . _ _ _
1
17 2 0, 1, 2, 3, 4 Moving average (sampling cycle: 100 msec.)
0: No, 1: 4 samples, 2: 8 samples, 3: 16 samples, 4: 32 samples
0
18 2 0, 1, 2, 3 Contact input function
0: Tare adjustment, 1: Peak hold, 2: Valley hold, 3: Sample hold
0
19 2 0, 1 – 60 Power-saving mode
0: Continuous display after the last access*4
1 – 60 : Time before display turned off (minutes)
10
20 2 10 – 99 Power ON-delay time (seconds) 10
21 2 0 – 99 Alarm ON-delay time (seconds) 0
22
23
24
25
2
2
2
2
0, 1
0, 1
0, 1
0, 1
L1 trip operation
L2 trip operation
L3 trip operation
L4 trip operation
(0: Lo, 1: Hi)
(0: Lo, 1: Hi)
(0: Lo, 1: Hi) *2
(0: Lo, 1: Hi) *2
Quad: 0
Quad: 0
Quad: 1
Quad: 1
Dual: 0
Dual: 1
26
27
28
29
2
2
2
2
0, 1
0, 1
0, 1
0, 1
L1 coil at alarm (0: Energized, 1: De-energized)
L2 coil at alarm (0: Energized, 1: De-energized)
L3 coil at alarm (0: Energized, 1: De-energized)*2
L4 coil at alarm (0: Energized, 1: De-energized)*2
0
0
0
0
30
31
32
33
2
2
2
2
1 – 9999
1 – 9999
1 – 9999
1 – 9999
L1 hysteresis (deadband) in engineering unit
L2 hysteresis (deadband) in engineering unit
L3 hysteresis (deadband) in engineering unit *2
L4 hysteresis (deadband) in engineering unit *2
1.0
1.0
1.0
1.0
34 N/A ---- Version No. indication ----
*1. Selectable within the display scaling range
*2. Quad alarm trip type only
*3. Of the range set in ITEM 06/07/08. ITEM 14 < ITEM 15.
*4. OFF when power is on. After power is turned on, pressing any key enables to turn on continuously.

AS4LC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-1601 Rev.7 P. 4 / 6
■SENSOR ADJUSTMENTS USING AN ACTUAL LOAD
1) Program Mode
Set ITEM 01 – DATA 2 to turn the unit into Program
Mode.
2) Excitation Voltage
Choose ITEM 05. Press DATA UP or DOWN key until
the Data display shows the desired excitation voltage.
When the value calculated by [Excitation / Resistance]
exceeds 30 mA, set a voltage value to fit with 30 mA limit.
[Example] Max. excitation voltage 10 V
Strain gauge resistance 120 Ω
If you choose 10 V as the excitation:
10 V / 120 Ω = 83.3 mA --> out of allowable range
Then you will choose 3.6 V or less as calculated by the
equation: 30 mA × 120 Ω = 3.6 V
3) 0% Input Voltage
Choose ITEM 07. With no load applied to the sensor,
press DATA DOWN key until the display value is stabi-
lized (while the computation circuit of the unit conducts
averaging process).
DATA display shows the approximate offset voltage.
Display Value = Sensor Voltage × Internal Coefficient*
4) 100% Input Voltage
Choose ITEM 08. With an actual known load, press
DATA DOWN key until the display value is stabilized
(while the computation circuit of the unit conducts aver-
aging process).
DATA display shows the sensor’s sensitivity span.
5) Monitor Mode
Set ITEM 01 – DATA 1 to turn the unit into Monitor
Mode.
6) PV Indication
Press ITEM UP or DOWN key until ITEM display indi-
cates “P”.
If necessary, go to Display Range Scaling, Moving Average,
and other adjustments.
Set the unit to Monitor Mode with ITEM P displayed other
than for programming.
*If 100% load is not available, use the load ratio setting.
With 10% load, set ITEM 09 – DATA 10.0 before adjustments.
■SENSOR ADJUSTMENTS BY ENTERING VALUES
1) Turn the unit into Program Mode.
2) Excitation Voltage
Choose ITEM 05. Press DATA UP or DOWN key until
the DATA display shows the desired excitation voltage.
When the value calculated by [Excitation / Resistance]
exceeds 30 mA, set a voltage value to fit with 30 mA limit.
[Example] Max. excitation voltage 10 V
Strain gauge resistance 120 Ω
If you choose 10 V as the excitation:
10 V / 120 Ω = 83.3 mA --> out of allowable range
Then you will choose 3.6 V or less as calculated by the
equation below:
30 mA × 120 Ω = 3.6 V
3) 0% Input Voltage
Choose ITEM 07. With no load applied to the sensor,
press DATA DOWN key until the display value is stabi-
lized (while the computation circuit of the unit conducts
averaging process).
DATA display shows the approximate offset voltage.
Display Value = Sensor Voltage ≈ Internal Coefficient
4) Sensor’s Sensitivity
Choose ITEM 06. Press DATA UP or DOWN key until
the display shows desired value as specified in the sen-
sor’s specification sheet.
5) Turn the unit into Monitor Mode.
6) Set to ITEM P.
If necessary, go to Display Range Scaling, Moving Average,
and other adjustments.
Set the unit to Monitor Mode with ITEM P displayed other
than for programming.
■DISPLAY RANGE SCALING
[Example]
PV display range 0.0 to 100.0 modified to show -100 to 100
1) Turn the unit into Program Mode.
2) Decimal Point Position
Choose ITEM 16 – DATA 0.
3) 0% Scaling Value
Choose ITEM 14 – DATA -100.
(Negative [–] range is identified with the PL1 turned on.)
4) 100% Scaling Value
Choose ITEM 15 – DATA 100.
5) Turn the unit into Monitor Mode.
6) Set to ITEM P.
■TARE ADJUSTMENT
1) Turn the unit into Program Mode.
2) Contact Input Function
Choose ITEM 18 – DATA 0.
3) Turn the unit into Monitor Mode.
(ITEM 18 is set to DATA 0 as default. No need of con-
ducting 1 through 3.)
4) Set to ITEM P.
5) Close across the contact input terminals (Di).
By the above mentioned procedure, the tare value is stored
in ITEM 10, the PV display shows the value set by 0% Scal-
ing Value, and the transmitter outputs the value set by 0%
Output.
The above mentioned procedure is applicable to modifica-
tions from default setting.

AS4LC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-1601 Rev.7 P. 5 / 6
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)
80 (3.15)
50 (1.97)
72 (2.83) [3.3 (.13)]
80 (3.15)
20
(.79)
60 (2.36)
72 (2.83)
7.8 (.31)
CLAMP
(top & bottom)
DIN RAIL
35mm wide
2 – 4.5 (.18) dia.
MTG HOLE
25 (.98) deep
14
– M3.5
SCREW
• When mounting, no extra space is needed between units.
12 56 14
11 1 1015
4
3
2
7
9
8
103 (4.06)
132 (5.20)
■CONNECTION DIAGRAM
■N.O. RELAY
14
CONTACT
INPUT (Di)
2
11
+
–
■N.C. RELAY
7U(+)
V(–)
POWER
14
CONTACT
INPUT (Di)
2
11
+
–
7U(+)
V(–)
POWER
■SPDT RELAY
L2 OUTPUT
L1 OUTPUT
COM
STRAIN
GAUGE +
–
+
–
INPUT
EXC.
STRAIN
GAUGE +
–
+
–
INPUT
EXC.
5
3
12
4
6
5
3
12
4
6
10
8
1
15
9
10
1
15
9
L1 OUTPUT
L2 OUTPUT
L3 OUTPUT
L4 OUTPUT
COM
8
L1 OUTPUT
L2 OUTPUT
L3 OUTPUT
L4 OUTPUT
COM
10
9
15
8
1
NC
NO
NC
NO

AS4LC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-1601 Rev.7 P. 6 / 6
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
7 – 14 with a multimeter.
3) Strain gauge: Maximum allowable current supplied to
the strain gauge is 30 mA. Check the resistance of the
sensor.
4) Input: Check voltage across the terminal 4 (+) – 12 (–)
with a multimeter. The voltage value at the maximum
load must equal [Excitation × Strain Gauge Sensitivity].
5) Alarm operations: Check the alarm operations referring
to the figure below.
6) Output load: Check that the output load is 380 V AC /
120 VA or 125 V DC / 30 W (≤ 0.5 A for CE) at the maxi-
mum. For maximum relay life with inductive load, exter-
nal protection is recommended.
050 100 ▲
Input
(%)
LL L
▲▲
HHH
L2 (15–8) ON
▲
L3 (10–8) ON
L4 (1–8) ON
OFF
OFF
L1 (9–8) ON
OFF
OFF
Alarm Trip Operation Terminal No. in parentheses
Example with quad N.O. contacts (LL, L, H, HH)
Trip Operation in Power Failure
• Output code 2: All relays turn off.
• Output code 3: All relays turn on.
• Output code 5: Terminals 15 –8, 1 – 8 turn on.
MAINTENANCE
Regular calibration procedure is explained below:
■CALIBRATION
Warm up the unit for at least 10 minutes.
• H (HH) Setpoint
Increase the input signal from a value lower than the set-
point and check that the relay trips at the H (or HH) set-
point within the setpoint accuracy described in the data
sheet.
• L (LL) Setpoint
Decrease the input signal from a value higher than the
setpoint and check that the relay trips at the L (or LL)
setpoint within the setpoint accuracy described in the
data sheet.
When the setpoints are shifted, please contact M-System’s
Sales Office or representatives.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.