11-6 Technical Specifications
590 Series DC Digital Converter
Terminal Definitions (Digital/Analog Inputs & Outputs)
Digital Input Nominal Input Voltage
Maximum Input Voltage
Input Impedance
Sample Time
Threshold
V Input Low
V Input High
24V dc
30V dc
4.7kΩ
10ms
16V typical
<6V
>18V
Digital Output
These outputs are active
high and source current
from the terminal to the
load. Thus the load
must be connected
between the output and
the signal ground. A
free-wheel diode is
included in the output to
protect the output
transistor when
switching inductive
loads such as relays.
Digital Output Voltage
Digital Output Current
Output Update Rate
Output Impedance
+24V dc
+50mA maximum source
10ms
Negligible up to 50mA load, short circuit protection
provided.
Analog Input/Output
Terminal blocks A, B,
and C are located on
the control board each
block being a 9 way
plug-in connector. In
addition to terminal
blocks A, B and C,
terminal blocks G and
H provide connections
when the two option
modules are fitted on
the control board.
Input/Output Resolution
Input Impedance
Maximum Input Sample Rate
Input Overload Capability
Output Capacity
Output Update Rate
Output Overdrive Capability
10 Bit plus sign, i.e. 10mV. 0.1% of full scale deflection
100kΩ with a 1ms filter for Analog I/P (A3) and 2ms for
others
10ms (typically), 3ms for Analog I/P 2 (A3)
10%, i.e. maximum recognisable voltage 11V. Analog
Tachogenerator input should be applied to Terminal G3
on Calibration Option Card only
10V at 5mA. Short circuit protected
10ms
10%, i.e. maximum output 11V
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