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2.0 ED2.0 BOARDS AVAILABLE/MAGNETIC ACTUATOR COIL ENERGIZING
CAPACITOR
1. Low voltage full optional board (17 – 75 VDC or 20 – 52 VAC)
2. High voltage full optional board (77 – 280 VDC or 85 – 264 VAC)
3. 0.1 farad aluminum electrolytic capacitor
3.0 BINARY
There is a removable filter card plugged into the ED2.0 board. This filter card has five metal
jumpers on it. When the jumpers are cut, the binary input threshold is raised by 20 V. It is recom-
mended that these be cut for 125 VDC operation.
Binary input channels work properly with a voltage range of 24 to 264 VAC/DC regardless of
which board is used. All inputs have a low threshold at about 18 VDC and 19 VAC with the
exception of the Protection Relay input, which has a low threshold of about 7 VDC. To avoid
false triggering by noise, the inputs must be active for at least 6 milliseconds. The current draw
for most inputs is < 2 milliamperes. The exception is the Remote Open and Close inputs, which
draw up to approximately 20 milliamperes. The input impedance (Z) is 300 kOhms except for
binary inputs 1 and 2 (Remote open and close) which are around 14 kOhms input Z.
There are seven different input channels. Only six of them are used for the R-MAG breaker
(channel 5 is not used).
3.1 Remote Close (KM1005, CH 1, Pins 1 and 2)
The Remote Close input is used to close the breaker remotely. The input impedance is approxi-
mately 14 kOhms.
3.2 Remote Open (KM1005, CH 2, Pins 3 and 4)
The Remote Open input is used to trip breaker remotely. The input impedance is approximately
14 kOhms. When tripping with electromechanical relays, an additional resistor will be required to
drop the trip flags.
3.3 Auxiliary Open / Safe Open (KM1005, CH 3, Pins 5 and 6)
This input can be configured as either an Auxiliary Open function or a Safe Open function. The
position of dip switch I1002 determines which is selected. If it is Off, it is used as Auxiliary. If the
dip switch is On, it is used as Safe Open.
The Auxiliary Open functions the same as the Remote Open function, with the exception of the
input impedance which is approximately 300 kOhms.
The Safe Open function allows the user to open the circuit breaker when the on board microcon-
troller is faulty. During normal conditions, all opening inputs work, but if the microcontroller is
damaged, only the Safe Open input can perform the opening command. When the microcon-
troller is damaged, capacitor monitoring is not active so other inputs will be ignored. In order for
the breaker to open correctly, there must be sufficient energy in the capacitors.
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