28 Introduction and Technical Data
Ramped Speed Reference Analogue Input UIP4 T4
0 to + /-10V linear input for 0 to + /-100% speed. Overvoltage protected to + /-50 V. Input impedance 100K.
This input is routed through a programmable up/down ramp.
See 6.7.7.7 SPEED PI A D APTION / Using small speed inputs. The default gives lo w gain for small inputs.
Lower Current Clamp (-ve) Analogue Input UIP5 T5
0 to -10V linear input for 0 to -15 0% armature current clamp level. Overvoltage protected to + /-50V. Input
impedance 100K. Note. When negative, it operates as a clamp on the current demand generated by the
speed loop. When positive it drives the demand and ignores the speed loop. Note a demand level cannot
override a clamp level. See also T21.
Main Current Limit/ Upper Current Clamp ( + ve ) Analogue Input UIP6 T6
0 to + 10V linear input for 0 to + 150 % armature current clamp level. Overvoltage protected to + /-50 V.
Input impedance 1 00K. Note. When positive, it operates as a clamp on the current demand generated by the
speed loop. When negative, it drives the demand and ignores the speed loop. Note a demand level cannot
override a clamp level. See also T21.
Motorised pot simulator, preset va lue enable Digital Input UIP7 T7
While this terminal is held high the motorised pot simulator is moved immediately to 0.00%. (default preset
value). When it is taken low the motorised pot simulator output moves according to the Increase/Decrease
inputs on terminals T8/T9.
Motorised pot simulator, Increase Digital input UIP8 T8
Motorised pot simulator, Decre ase Digital input UIP9 T9
Speed Feedback Analogue Output AOP1 T10
0 to + /-10 V linear output for 0 to + /-100% speed feedback. Output current capability 5mA max. Short
circuit protection to 0 V. (A OP1 or 2 or 3, must not be simultaneously shorted to 0V). Programmable Uni-
polar or Bi-polar output mode.
Total Speed Reference Analogue Output AOP2 T11
0 to + /-10 V linear output for 0 to + /-100 % total speed reference. Output current capability + /-5mA max.
Short circuit protection to 0 V. (AOP1 or 2 or 3 must not be simultaneously shorted to 0V).
Total current demand Analogue output AOP3 T12
0 to + /-10 V linear output for 0 to + /-100% current demand. Output current capability + /-5mA max. Short
circuit protection to 0 V. (A OP1 or 2 or 3 must not be simultaneously shorted to 0V). Programmable Unipolar
or Bi-polar output mode.
0V on T13 must be used for protective clean earth connection 0V T13
Spare input Logic low below 2V, high above 4V Digital input DIP1 T14
Marker input Logic low below 2V, high above 4V Digital input DIP2 T15
Encoder (B train or sign) Logic low below 2V, high above 4V Digital input DIP3 T16
Encoder (A train) Logic low below 2V, high above 4V Digital input DIP4 T17
Zero reference interlock Digital input DIO1 T18
This input selects an interlock that will prevent the main contactor from energising if the speed reference is
not first returned to less than the 117) ZERO INTLCK SPD % setting.
Jog mode select Digita l input DIO2 T19
When low, jog/slack speed 1 is selected. When high, jog/slack speed 2 is selected.
Ramp Hold Digital input DIO3 T20
If the input is high, the RUN MO DE RAMP output is held at the last value irrespective of the Ramped
Reference Input. When lo w, the output follo ws the ramped reference input with a ramp time determined by
the FORW ARD up/do wn and REVERSE up/do wn ramp time parameters.
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