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Mentor MP User Guide                       51
Issue: 3                        www.controltechniques.com
Figure 4-20 Default terminal functions
* Thermistor disabled by USA defaults.
4.14      General
4.14.1     Control terminal specification
Analog speed reference 1
 
 
 
Single-ended 
signal
 
 
Differential signal
Reset
Run forward
Run reverse
Analog input 1/
input 2 select
8
Armature
current
Analog input 3
(Motor thermistor)
0V
Non-inverting input
Inverting input
0V
Non-inverting input
Inverting input
+10V output
Analog input 2
Analog input 3*
Analog output 1
Analog output 2
0V
0V
+24V output
0V
Digital I/O 1
Digital I/O 2
Digital I/O 3
Digital input 4
Digital input 5
Digital input 6
0V
Drive enable 
Analog speed 
reference 2
Polarized signal
connectors
Status
relay 1
Tac ho
41
42
51 52 53
Status
relay 2
61 62 63
1
21
11
31
A  A\ B
B\
Z Z\ + 0
Encoder
+
_
Arm
current
MA1
MA2
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 @12mA
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 ±10.0V ±1.5%
Absolute maximum 
voltage range
+30V, -18V relative to 0V
Working common mode voltage 
range
±16V 
Input resistance
94k
Ω 
Resolution 14-bit plus sign
Monotonic Yes 
Dead band None 
Jumps None 
Maximum offset ±5mV
Maximum non linearity ±0.05% of Full scale voltage range
Maximum gain asymmetry ±0.2%
Input filter bandwidth single pole ~1kHz
Sampling period
250
μs if configured with the destination as 
Pr 1.36, Pr 1.37, Pr 3.19 and Pr 4.08. 4ms 
for all other destinations