22
nd
October 2004 SC2000 Manual – 177/52301 Rev G Page 9
Three of the above inputs, pins 9, 10 & 21 have supply
outputs associated with them, pins 11, 12 & 23
respectively. Various connection options are available.
Voltage Range: 0V - 5.0V
Using the calibrator, the minimum and maximum
levels can be defined to equal any two voltages in the
above range.
Option 1: Potentiometers wired as ‘2 wire’ systems between the
input pins and B-ve. The wiper will be connected to
either the input or B-ve. Leave the associated supply pin
unconnected. This option available on all 4 analogue
inputs.
Nominal potentiometer resistance range: 1k to 10k.
Option 2: Potentiometers wired as ‘3 wire’ systems will be
connected between B-ve and the associated supply pin,
with the wiper connecting to the input pin.
This option only available on input pins 9, 10 & 21.
Nominal potentiometer resistance range: 2K to 20K.
Option 3: Voltage source type inputs, such as solid state
accelerator units that derive there own supply, should
feed directly into the analogue input pin. Connecting the
associated supply pin to B-ve disables an internal pull
up resistor and presents the analogue pin as a high
impedance input.
This option only available on input pins 9, 10 & 21
Nominal voltage input range: 0 to 5.0V
Absolute Max. Voltages: -1 V to +150 V.
An example of each connection option is shown in the light wiring diagram (figure 1)
5.3.9 Supply output: Connector A (24 way) pin 24
An unregulated +12V power supply is available for
supplying speed sensors etc. Contact SEVCON for
details before using this pin.
5.3.10 Contactor Drives: Connector B (12 way) pins:- 1, 2, 3, 4, 5, 6, 7 & 8
Maximum Current: 2A.
Protection: Drives are protected against direct connection to
B+ and B-.
Suppression: Coil suppression built-in.
+ve coil supply: Connector B (12 way) pin 11
All the contactor coils must be supplied from this pin
and NOT from the keyswitch or B+ directly.
There are a maximum of 8 contactor drives available.
To Next Page
Loading...
Need help?
General