MLS
P. 3 / 3
EM-1644
CHECKING
1) Terminal wiring: Check that all cables are correctly
connected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal 7
–␣ 8 with a multimeter.
3) Inputs: Check that the input signals are within 0 – 100%
of the full-scale.
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 calibra-
tion.
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 the input signals which should lead the
calculated result as 0%, and adjust output to 0%.
2) SPAN:
[K
1
×
␣ K
2
≥
1] Apply the input signals which should lead the
calculated result as 100%, and adjust output to 100%.
[K
1
×
␣ K
2
< 1] Apply the input signals which should lead the
calculated result as [100
×
K
1
×
␣ K
2
] %, and adjust output to
[100
×
K
1
×
␣ K
2
] %.
3) Check ZERO adjustment again.
4) When ZERO value is changed, repeat the above procedure
1) – 3).
EQUATION
Output = K
1
×
Input 1
×
␣ K
2
×
␣ Input 2
K
1
, K
2
:
0.10 –␣ 1.15 (parameters)
Input 1, Input 2: 0 –␣ 115%;
Forcibly limited to 0% or 115% with overrange.
Output: 0 – 115% with K
1
×
K
2
≥
1;
Forcibly limited to 0% or 115% with overrange.
0 – [115
×
␣ K
1
×
K
2
] % with K
1
×
K
2
< 1;
Forcibly limited to 0% or [115
×
␣ K
1
×
K
2
] %
with overrange.
K
1
, K
2
are ex-factory specified.
[example] K
1
K
2
INP1
INP2
OUT
1.00
1.15 115%
100%
115%
1.00
1.15 100%
50% 57.5%
1.00
1.15 100%
-5%
0%
POINTS OF CAUTION
■
GENERAL
•Before you remove the unit from its base socket or mount it,
turn off the power supply and input signal for safety.
■
ENVIRONMENT
• When heavy dust or metal particles are present in the air,
install the unit inside proper housing and ventilate it.
• Do not install the unit where it is subjected to continuous
vibration. Do not apply physical impact to the unit.
• Environmental temperature must be within -5 to +60
°
C (23
to 140
°
F) with relative humidity within 30 to 90% RH in order
to ensure adequate life span and operation.
• Be sure that the ventilation slits are not covered with
cables, etc.
■
WIRING
• Do not install cables (power supply, input and output) 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 power is
supplied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data sheet.
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
[K
1
×
␣ K
2
≥
1]
Warm up the unit for at least 10 minutes. Apply the input
signals which should lead the calculated results as 0%, 25%,
50%, 75% and 100%. Check that the output signal for the
respective input signal remains within accuracy described in
the data sheet.
[K
1
×
␣ K
2
< 1]
Warm up the unit for at least 10 minutes. Apply the input
signals which should lead the calculated result as 0%, [25
×
K
1
×
␣ K
2
] %, [50
×
K
1
×
␣ K
2
] %, [75
×
K
1
×
␣ K
2
] %, and [100
×
K
1
×
␣ K
2
] %. Check that the output signal for the respective input
signals shows 0%, [25
×
K
1
×
␣ K
2
] %, [50
×
K
1
×
␣ K
2
] %, [75
×
K
1
×
␣ K
2
] %, and [100
×
K
1
×
␣ K
2
] %, and it remains within accuracy
described in the data sheet.
When the output is out of tolerance, recalibrate the unit
according to the "ADJUSTMENT PROCEDURE" explained
earlier.
M-SYSTEM WARRANTY
M-System warrants such new M-System product which it manufactures to be free from defects in materials and workmanship during the 36-month period following the date that such
product was originally purchased if such product has been used under normal operating conditions and properly maintained, M-System's sole liability, and purchaser's exclusive remedies,
under this warranty are, at M-System's option, the repair, replacement or refund of the purchase price of any M-System product which is defective under the terms of this warranty. To
submit a claim under this warranty, the purchaser must return, at its expense, the defective M-System product to the below address together with a copy of its original sales invoice.
THIS IS THE ONLY WARRANTY APPLICABLE TO M-SYSTEM PRODUCT AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. M-SYSTEM SHALL HAVE NO LIABILITY FOR CONSEQUENTIAL, INCIDENTAL OR
SPECIAL DAMAGES OF ANY KIND WHATSOEVER.
M-System Co., Ltd., 5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN, Phone: (06) 6659-8201, Fax: (06) 6659-8510, E-mail: [email protected]
