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MM6010
AC INPUT
ISOLATED TRANSMITTER
DESCRIPTION
The MM6010 provides DC output
voltage or current proportional to an
AC input signal. It is useful in measuring
AC voltages or currents and converting
them to DC levels for driving controllers,
recorders, meters, or other instruments.
It utilizes a precision rectifier system to
provide accurate and stable
rectification of the AC input signal. The
module provides an output signal
proportional to the average level of the
input signal. It is calibrated assuming a
sinusoidal input signal will be applied.
Other calibrations are available.
The module includes filtering and
conditioning to reduce susceptibility
to transients and noisy operations.
They utilize pulse width modulation
to develop a pulse train with a duty
cycle proportional to the input signal
amplitude. This pulse train is coupled
through a pulse transformer where
the duty cycle data is converted to a
proportional DC level in the output
circuit.
TYPICAL APPLICATIONS
Monitoring power line or power supply
voltages and currents. Measuring the
output of self-generating process
sensors or transducers which generate
AC signals and measuring current
consumption of electrical devices such
as motors, pumps or heaters.
OPTIONS
The following options are available on
the MM6010:
U All circuit boards
conformal coated for
protection against
moisture.
DC Power Inverter-isolated 12 or
24 VDC power.
CONTROLS
Two controls, ZERO and SPAN, are
accessible from the top of the module.
CALIBRATION
The MM6010 is shipped pre-calibrated. If
there is a need to re-calibrate, proceed as
follows:
Refer to the instrument’s label to determine
your instrument’s supply voltage and input
and output ranges. Refer to the “Block
Diagram and Pin Connections” for pin
connections.
Connect a precision AC voltage source to
the input. Connect a precision DC voltage or
current meter to the output.
Set the input to the low end of the input range
and adjust the ZERO control for the low-end
output voltage or current. Raise the input to
full scale and adjust the SPAN control for full
scale output. Repeat until both readings are
correct.
MOUNTING
The module is designed to plug into a standard
8 pin relay socket. Part number MP008 is a
molded plastic socket that can be mounted on
a flat surface or snapped into 2¾ inch wide
PVC track (part no. TRK 48).
A spring hold-down clip (part no. CLP-1) is
available for installations where vibration
may be a problem.
A Killark HK Series explosion-proof housing
with dome and 8-pin socket is available (HKBHK2D-8). A DIN-rail mounted socket (DMP008)
is available for 35mm symmetrical DIN-rail.
WARRANTY
The Mighty Module Series of products carry
a limited warranty of 10 + 5 years. In the
event of a failure due to defective material or
workmanship, during the 10 year period, the
unit will be repaired or replaced at no charge.
For a period of 5 years after the initial 10 year
warranty, the unit will be repaired, if possible,
for a cost of 10 % of the original purchase
price.
Relays are not covered by the warranty.
CASE DIMENSIONS INCHES [mm]
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SPECIFICATIONS
Input Range
Voltage
select any range from 0 to 250 V max*
(min span 50 mV)
Current
select any range from 0 to 1 A rms
max,**
(min span 1 mA, internal shunt)
Input Frequency
40 Hz to 1 kHz sine wave
Input Impedance
Voltage
200 kilohms
Current Input
Input Shunt Value
1 mA 100 OHM
10 mA 10 OHM
20 mA 5 OHM
100 mA 1 OHM
1 A 0.1 OHM
Output Range
Voltage
select any range from -10 V to +15 V,
10mA max load (min. span 0.2 V)
Current
select any range from 0 to 25 mA max,
(min span 1 mA)
18 V compliance ***
Response Time
1 sec typical
Accuracy
±0.5% of span
Linearity
±0.1% of span
Common Mode Rejection
120 dB, DC to 60 Hz
Isolation
Output/Input
> 500 megohms
Breakdown Voltage
>1000 VAC rms
Output Ripple
(peak to peak)
< = 0.05% of span
Linearity
± 0.05% of span
Breakdown, Power Circuitry
>1500 VAC rms
Operating Temperature
14°F to 140°F / -10°C to 60°C
Temperature Stability
±0.02% of span/°C
Power
115 VAC ±10%,
50 to 60 Hz
(2.5 W max)
230 VAC ±10%,
50 to 60 Hz
(2.5 W max)
(DC Power Option)
24 VDC
(limits 21 VDC to 28 VDC)
(2.5 W max)
Isolation, DC power supply to input
common: >500 megohms
* within specified range limits
** For input values greater than 1 A rms
select appropriate external shunt
resistor for 0-500 mV rms input.
***Compliance:
The sum of all voltage drops in the
output loop cannot exceed 18 V at
rated current (900 ohms @ 20 mA).
Specifications Are Subject To Change Without Notice. © 2007 Wilkerson Instrument Co., Inc. DWG#101607B 3/07
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