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94 Unidrive SPM User Guide
www.controltechniques.com Issue Number: 3
6.17.2 SPMA and SPMD control terminal
specification
T8 analog input 3 has a parallel connection to terminal 15 of the drive
encoder connector.
1 0V common
Function
Common connection for all external
devices
2 +24V external input
Function
To supply the control circuit
without providing a supply to the
power stage
Nominal voltage +24.0Vdc
Minimum continuous operating
voltage
+19.2Vdc
Maximum continuous operating
voltage
+30.0Vdc
Minimum start-up voltage 21.6Vdc
Recommended power supply 60W 24Vdc nominal
Recommended fuse 3A, 50Vdc
3 0V common
Function
Common connection for all external
devices
4 +10V user output
Function Supply for external analog devices
Voltage tolerance ±1%
Nominal output current 10mA
Protection Current limit and trip @ 30mA
Precision reference Analog input 1
5 Non-inverting input
6 Inverting input
Default function Frequency/speed reference
Type of input
Bipolar differential analog
(For single-ended use, connect terminal 6
to terminal 3)
Full scale voltage range ±9.8V ±1%
Absolute maximum
voltage range
±36V relative to 0V
Working common mode voltage
range
±13V relative to 0V
Input resistance
100k
Ω ±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 ~1kHz
Sampling period
250
μs with destinations as Pr 1.36, Pr 1.37
or Pr 3.22 in closed loop vector or servo
mode. 4ms for open loop mode and all
other destinations in closed loop vector or
servo mode.
7 Analog input 2
Default function Frequency/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 ±9.8V ±3%
Maximum offset ±30mV
Absolute maximum voltage range ±36V relative to 0V
Input resistance
>100k
Ω
Operating in current mode
Current ranges
0 to 20mA ±5%, 20 to 0mA ±5%,
4 to 20mA ±5%, 20 to 4mA ±5%
Maximum offset
250
μA
Absolute maximum voltage
(reverse bias)
−36V max
Absolute maximum current +70mA
Equivalent input resistance
≤200
Ω at 20mA
Common to all modes
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 in closed loop vector or
servo mode. 4ms for open loop mode, all
other destinations in closed loop vector or
servo mode, or any destination when
configured as a current input.
8 Analog input 3
Default function
V01.07.00 and later: Motor thermistor
input (PTC)
V01.06.02 and earlier: Not configured
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 ±9.8V ±3%
Maximum offset ±30mV
Absolute maximum voltage range ±36V relative to 0V
Input resistance
>100k
Ω
Operating in current mode
Current ranges
0 to 20mA ±5%, 20 to 0mA ±5%,
4 to 20mA ±5%, 20 to 4mA ±5%
Maximum offset
250
μA
Absolute maximum voltage
(reverse bias)
−36V max
Absolute maximum current +70mA
Equivalent input resistance
≤200
Ω at 20mA
Operating in thermistor input mode
Internal pull-up voltage <5V
Trip threshold resistance
3.3k
Ω ±10%
Reset resistance
1.8k
Ω ±10%
Short-circuit detection resistance
50
Ω ±40%
Common to all modes
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 in closed loop vector or
servo mode. 4ms for open loop mode, all
other destinations in closed loop vector or
servo mode, or any destination when
configured as a current input.
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