Emerson Digitax ST User Manual

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Digitax ST User Guide 35
Issue: 5
4.14.1 Control terminal specification
T8 analog input 3 has a parallel connection to terminal 15 of the drive
input encoder connector.
1 0V common
Function
Common connection for all external
devices
2 +24 V external input
Function
To supply the control circuit
without providing a supply to the
power stage
Nominal voltage +24.0 Vdc
Minimum continuous
operating voltage
+19.2 Vdc
Maximum continuous
operating voltage
+30.0 Vdc
Minimum start-up voltage 21.6 Vdc
Recommended power supply 60 W 24 Vdc nominal
Recommended fuse 3 A, 50 Vdc
3 0V common
Function
Common connection for all external
devices
4 +10V user output
Function Supply for external analog devices
Voltage tolerance ±1 %
Maximum output current 10 mA
Protection Current limit and trip @ 30 mA
Precision reference Analog input 1
5 Non-inverting input
6 Inverting input
Default function Speed reference
Type of input
Bipolar differential analog
(For single-ended use, connect
terminal 6 to terminal 3)
Full scale voltage range ±9.8 V ±1 %
Absolute maximum
voltage range
±36 V relative to 0V
Working common mode
voltage range
±13 V relative to 0V
Input resistance 100 kΩ ±1%
Resolution 16-bit plus sign (as speed reference)
Monotonic Yes (including 0V)
Dead band None (including 0V)
Jumps None (including 0V)
Maximum offset 700 μV
Maximum non linearity 0.3 % of input
Maximum gain asymmetry 0.5 %
Input filter bandwidth single
pole
~1 kHz
Sampling period
250 μs with destinations as Pr 1.36,
Pr 1.37 or Pr 3.22.
7 Analog input 2
Default function Speed reference
Type of input
Bipolar single-ended analog voltage
or unipolar current
Mode controlled by... Pr 7.11
Operating in Voltage mode
Full scale voltage range ±9.8 V ±3 %
Maximum offset ±30 mV
Absolute maximum
voltage range
±36 V relative to 0V
Input resistance >100 kΩ
Operating in current mode
Current ranges
0 to 20 mA ±5 %, 20 to 0 mA ±5 %,
4 to 20 mA ±5 %, 20 to 4 mA ±5 %
Maximum offset 250 μA
Absolute maximum voltage
(reverse bias)
−36 V max
Absolute maximum current +70 mA
Equivalent input resistance ≤200 Ω at 20 mA
Resolution 10 bit + sign
Sample period
250 μs when configured as voltage
input with destinations as Pr 1.36,
Pr 1.37, Pr 3.22 or Pr 4.08.
8 Analog input 3
Default function Motor thermistor input (PTC)
Type of input
Bipolar single-ended analog voltage,
unipolar current or motor thermistor
input
Mode controlled by... Pr 7.15
Operating in Voltage mode (default)
Voltage range ±9.8 V ±3 %
Maximum offset ±30 mV
Absolute maximum
voltage range
±36 V relative to 0V
Input resistance >100 kΩ
Operating in current mode
Current ranges
0 to 20 mA ±5 %, 20 to 0 mA ±5 %,
4 to 20 mA ±5 %, 20 to 4 mA ±5 %
Maximum offset 250 μA
Absolute maximum voltage
(reverse bias)
−36 V max
Absolute maximum current +70 mA
Equivalent input resistance ≤200 Ω at 20 mA
Operating in thermistor input mode
Internal pull-up voltage <5 V
Trip threshold resistance 3.3 kΩ ±10 %
Reset resistance 1.8 kΩ ±10 %
Short-circuit detection
resistance
50 Ω ±30 %
Resolution 10 bit + sign
Sample period
250 μs when configured as voltage
input with destinations as Pr 1.36,
Pr 1.37, Pr 3.22 or Pr 4.08.

Emerson Digitax ST Specifications

General

Brand	Emerson
Model	Digitax ST
Category	Controller
Language	English