Download voltage signal isolator - OMEGA Engineering Canada

VOLTAGE SIGNAL
ISOLATOR
OMDC-VSI
179
$
l Accepts Wide Range of
Input Voltages
l Can be Used for Master/
Follower Operation
l Can be Used with Any DC
Speed Control
The OMDC-VSI (voltage signal isolator)
permits the user to control the output of a
variable speed motor drive from any external
grounded or ungrounded DC input signal.
A single model accepts a wide range of input
voltages (0 to 5 through 0 to 25 Vdc or
0 to 25 through 0 to 250 Vdc). The GAIN
trimpot is used to adjust the output of the
OMDC-VSI to full on when a full speed
signal is applied to its input terminals. The
OMDC-VSI incorporates a feedback circuit,
which virtually eliminates output changes
due to the thermal drift of logic components.
The OMDC-VSI is packaged in an aluminum
chassis mount housing and contains an
on-board power supply for its logic circuit.
An electrical isolation rating of 2500 Vrms is
achieved by the use of an optically isolated
IC package.
The OMDC-VSI can be used with virtually
any motor speed control that has a speed
reference circuit of +5 to +15 Vdc and an
input impedance greater than 47 kΩ. The
output of the OMDC-VSI is a filtered, pulse
OMDC-VSI, $179,
shown actual size.
width modulated signal that is directly
proportional to the input speed signal. The
wide input range allows the OMDC-VSI to
follow signals as low as 0 to 5V logic levels
and up to the 180 Vdc levels present at the
armature leads of a 180 Vdc motor. By
simply connecting the input terminals across
the armature leads of a “master motor”, you
can use the OMDC-VSI for master/follower
operation. The addition of a scaling pot will
provide for proportional follower operation.
To Order (Specify Model Number)
MODEL NO.
OMDC-VSI
PRICE
$179
Note: By adding a resistor across signal
input, OMDC-VSI can function as a current
signal isolator.
SPECIFICATIONS
Supply Voltage: 120/240 Vac, 50/60 Hz
Input Signal Voltage: 0-5 to 0-25 Vdc or
0-25 to 0-250 Vdc
Output Signal Voltage: +5 to +15 Vdc
Dimensions:
92 W x 108 L x 42 mm D
(3.63 x 4.25 x 1.65")
Weight: 277.3 g (9.8 oz)
AVAILABLE FOR FAST DELIVERY!
DESCRIPTION
Voltage signal isolator
Comes complete with operator’s manual.
Ordering Example: OMDC-VSI, voltage signal isolator for use with any DC speed control, $179.
D-1
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[email protected]
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