ES-1644 Rev.6
MLS
Plug-in Signal Conditioners M-UNIT
DIGITAL MULTIPLIER
Functions & Features
• Accepting two DC inputs and providing a standard process signal proportional to the multiplication of the two signals
• Isolation up to 2000 V AC
• LCD meter
• High-density mounting
Typical Applications
• DC wattmeter (multiplying voltage and current inpus)
• Remote gain control (potentiometer signals pre-converted into 1 – 5 V, provided to the MLS inputs)
MODEL: MLS–[1][2][3]–[4][5]
ORDERING INFORMATION
• Code number: MLS-[1][2][3]-[4][5]
Specify a code from below for each of [1] through [5].
(e.g. MLS-6AA-B/E/Q)
• Special input and output ranges (For codes Z & 0)
• Parameters (e.g. K
1
= 0.50, K
2
= 0.90)
• Specify the specification for option code /Q
(e.g. /C01/S01)
[1] INPUT 1
Current
A
: 4 – 20 mA DC (Input resistance 250 Ω)
A1
: 4 – 20 mA DC (Input resistance 50 Ω)
B
: 2 – 10 mA DC (Input resistance 500 Ω)
C
: 1 – 5 mA DC (Input resistance 1000 Ω)
D
: 0 – 20 mA DC (Input resistance 50 Ω)
E
: 0 – 16 mA DC (Input resistance 62.5 Ω)
F
: 0 – 10 mA DC (Input resistance 100 Ω)
G
: 0 – 1 mA DC (Input resistance 1000 Ω)
H
: 10 – 50 mA DC (Input resistance 100 Ω)
K
: 0 – 100 μA DC (Input resistance 1000 Ω)
GW
: -1 – +1 mA DC (Input resistance 1000 Ω)
FW
: -10 – +10 mA DC (Input resistance 100 Ω)
Z
: Specify current (See INPUT SPECIFICATIONS)
Voltage
1
: 0 – 10 mV DC (Input resistance 10 kΩ min.)
2
: 0 – 100 mV DC (Input resistance 100 kΩ min.)
3
: 0 – 1 V DC (Input resistance 1 MΩ min.)
4
: 0 – 10 V DC (Input resistance 1 MΩ min.)
5
: 0 – 5 V DC (Input resistance 1 MΩ min.)
6
: 1 – 5 V DC (Input resistance 1 MΩ min.)
4W
: -10 – +10 V DC (Input resistance 1 MΩ min.)
5W
: -5 – +5 V DC (Input resistance 1 MΩ min.)
0
: Specify voltage (See INPUT SPECIFICATIONS)
[2] INPUT 2
Same range availability as Input 1
[3] OUTPUT
Current
A
: 4 – 20 mA DC (Load resistance 750 Ω max.)
B
: 2 – 10 mA DC (Load resistance 1500 Ω max.)
C
: 1 – 5 mA DC (Load resistance 3000 Ω max.)
D
: 0 – 20 mA DC (Load resistance 750 Ω max.)
E
: 0 – 16 mA DC (Load resistance 900 Ω max.)
F
: 0 – 10 mA DC (Load resistance 1500 Ω max.)
G
: 0 – 1 mA DC (Load resistance 15 kΩ max.)
Z
: Specify current (See OUTPUT SPECIFICATIONS)
Voltage
1
: 0 – 10 mV DC (Load resistance 10 kΩ min.)
2
: 0 – 100 mV DC (Load resistance 100 kΩ min.)
3
: 0 – 1 V DC (Load resistance 100 Ω min.)
4
: 0 – 10 V DC (Load resistance 1000 Ω min.)
5
: 0 – 5 V DC (Load resistance 500 Ω min.)
6
: 1 – 5 V DC (Load resistance 500 Ω min.)
4W
: -10 – +10 V DC (Load resistance 2000 Ω min.)
5W
: -5 – +5 V DC (Load resistance 1000 Ω min.)
0
: Specify voltage (See OUTPUT SPECIFICATIONS)
[4] POWER INPUT
AC Power
B
: 100 V AC
C
: 110 V AC
D
: 115 V AC
F
: 120 V AC
G
: 200 V AC
H
: 220 V AC
J
: 240 V AC
DC Power
S
: 12 V DC
R
: 24 V DC
V
: 48 V DC
[5] OPTIONS (multiple selections)
Multiplication Indicator
blank
: Without
/E
: With (0.0 - 100.0 % display)
Other Options
blank
: none
/Q
: Option other than the above (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
TERMINAL SCREW MATERIAL
/S01
: Stainless steel
GENERAL SPECIFICATIONS
Construction
: Plug-in
Connection
: M3.5 screw terminals
Screw terminal
: Chromated steel (standard) or stainless steel
Housing material
: Flame-resistant resin (black)
Isolation
: Input 1 or input 2 to output to power
(Negative sides of the input 1 and 2 must be of the same potential.)
Overrange output
: 0 to 115 % at 1 – 5 V
Zero adjustment
: -5 to +5 % (front)
Span adjustment
: 95 to 105 % (front)
Equation:
Output = K
1
× Input 1 × K
2
× Input 2
K
1
, K
2
: 0.10 – 1.15 (parameters)
where K
1
× K
2
≥ 0.2
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 %
■ DISPLAY (
Multiplied
values indicator)
LCD digital display
: 0.0 - 100.0 % (min. digit 0.1 %)
(No scaling)
INPUT SPECIFICATIONS
■
DC Current
:
Shunt resistor attached to the input terminals (0.5 W)
Specify input resistance value for code Z.
■
DC Voltage
: -300 – +300 V DC
Minimum span
: 10 mV
Offset
: Max. 1.5 times span
Input resistance
Span 10 – 100 mV : ≥ 10 kΩ
Span 0.1 – 1 V : ≥ 100 kΩ
Span ≥ 1 V : ≥ 1 MΩ
OUTPUT SPECIFICATIONS
■ DC Current
: 0 – 20 mA DC
Minimum span
: 1 mA
Offset
: Max. 1.5 times span
Load resistance
: Output drive 15 V max.
■
DC Voltage
: -10 – +12 V DC
Minimum span
: 5 mV
Offset
: Max. 1.5 times span
Load resistance
: Output drive 10 mA max.; 5 mA for negative voltage output; at ≥ 0.5 V
INSTALLATION
Power input
•
AC
: Operational voltage range: rating ±10 %,
50/60 ±2 Hz, approx. 3 VA
•
DC
: Operational voltage range: rating ±10 %,
ripple 10 %p-p max., approx. 2 W (80 mA at 24 V)
Operating temperature
: -5 to +60°C (23 to 140°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Mounting
: Surface or DIN rail
Weight
: 350 g (0.77 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.2 %
Display accuracy
: ± (0.2 % of FS + 1 digit)
Temp. coefficient
: ±0.02 %/°C (±0.01 %/°F)
Response time
: ≤ 0.5 sec. (0 – 90 %)
Line voltage effect
: ±0.1 % over voltage range
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 2000 V AC @1 minute (input 1 or input 2 to output to power to ground)
EXTERNAL DIMENSIONS unit: mm [inch]
TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM