ETC 9980-0230-50

-
SERIES
99
COIL INDICATION AND MODULE
PROTECTION FACILITIES
LED module: to indicate presence of voltage across coil
DIODE module: to protect coil from back EMF
LED + DIODE module: to indicate presence of voltage across coil and protect coil from back EMF
LED + varistor module: to indicate presence of voltage across coil and protect coil from back EMF
RC circuit module
87
99.01
99.44
FUNCTIONS
DIODE MODULE
A1
+
D
-A2
99.73
OPERATING
RANGE
CODE
99.80
CODE
CODE
CODE
Recovery diode modules are used for DC only.
The negative cut-off voltage peaks of the coil
are short circuited by the recovery diode
6 - 220 V DC
(positive to terminal A1). The drop-out time
increases by an approximate factor of 3. If an
increase of the drop-out time is not wanted use
a Varistor or RC module.
9901.3000.00 9944.3000.00 9973.3000.00 9980.3000.00
Recovery diode modules are used for DC only.
The negative cut-off voltage peaks of the coil
are short circuited by the recovery diode
(positive to terminal A2). The drop-out time
6 - 220 V DC
increases by an approximate factor of 3. If an
increase of the drop-out time is not wanted use
a Varistor or RC module.
9901.2000.00 9944.2000.00
DIODE INVERTED POLARITY
A1
-D
+
A2
—
—
LED MODULE
A1
D
+
--
R
LED modules are used for AC and DC.
The LED indicator lights up when the coil is
energized.
When using DC it is essential that positive
LD is connected to terminal A1.
6 - 24 V DC/AC
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28 - 60 V DC/AC 9901.0060.59 9944.0060.59 9973.0060.59 9980.0060.59
110 - 230 V DC/AC 9901.0230.59 9944.0230.59 9973.0230.59 9980.0230.59
A2
DIODE MODULE + LED
A1
D
+
D
--
R
A2
Recovery diode modules + LED are for DC only.
The negative cut-off voltage peaks of the coil
are short circuited by the recovery diode
6 - 24 V DC
(positive to terminal A1). The drop-out time
28 - 60 V DC
increases by an approximate factor of 3.
LD
110 - 220 V DC
If an increase of the drop-out time is not
wanted use a Varistor or RC module. The LED
indicator lights up when the coil is energized.
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9901.9060.99 9944.9060.99 9973.9060.99 9980.9060.99
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DIODE MODULE +
LED INVERTED POLARITY
A1
--
D
D
+
R
A2
Recovery diode modules + LED are for DC only.
The negative cut-off voltage peaks of the coil
6 - 24 V DC
are short circuited by the recovery diode
(positive to terminal A2). The drop-out time
28 - 60 V DC
increases by an approximate factor of 3.
110 - 220 V DC
LD
If an increase of the drop-out time is not
wanted use a Varistor or RC module. The LED
indicator lights up when the coil is energized.
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9901.9060.79 9944.9060.79
9901.9220.79 9944.9220.79
—
—
LED MODULE + VARISTOR
A1
D
+
VDR
--
R
A2
LED modules + Varistor are used for both AC
and DC coils. The cut-off voltage peaks of the
relay coil are limited by the Varistor to
approximately 2.5 times the nominal voltage
LD of the module. When using DC coils it is
essential that positive is connected to terminal
A1. The relay drop-out time increases only
insignificantly.
6 - 24 V AC/DC
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28 - 60 V AC/DC 9901.0060.98 9944.0060.98 9973.0060.98 9980.0060.98
110 - 230 V AC/DC 9901.0230.98 9944.0230.98 9973.0230.98 9980.0230.98
RC MODULE
C
R
Rc circuit modules are used for AC and
DC coils. The cut-off voltage peaks of the relay
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are limited by the RC module to approximately 6 - 24 V AC/DC
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2.5 times the nominal voltage of the modules. 28 - 60 V AC/DC
The relay drop-out time increases only
110 - 230 V AC/DC 9901.0230.09 9944.0230.09 9973.0230.09 9980.0230.09
insignificantly.
REMANENCE
Bypass modules are advisable, if the relay
coils do not drop-out between 110-240 V AC.
Failure to drop-out can be caused by residual
110 - 230 V AC
R currents from AC proximity switches or
inductance couplings caused through long
parallel lying AC control lines.
88
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