590 Series DC Digital Drive
Technical Specifications E-19
Terminal Information – Control Board
This Control Board is common to all 590 units.
Terminal Description Terminal Function Signal Level Configurable Terminal
Number
Enable Input
Enable
The Enable Input provides a means of
electronically inhibiting controller operation. If
the enable input is not true all control loops will
be inhibited and the controller will not function.
+24V = True/Enable
+5V to +15V Transition region
YES
C5
Digital Input 1
Current Clamp Select
This input alters the configuration of the current
clamps. With no connection, i.e., false, Analog
I/P 5 provides a unipolar current limit. When
true, Analog I/P5 is the positive current clamp,
Analog I/P 4 is the negative current clamp.
+24V = True/Bipolar Clamp
+5V to +15V Transition region
YES C6
Digital Input 2
Ramp Hold
If the input is held true the S-Ramp output is
frozen at the last value irrespective of the Ramped
Setpoint Input. When false the S-Ramp Output
follows the Ramped Setpoint Input with a delay
determined by the Acceleration and Deceleration
Ramped time parameters.
+24V = True/Hold
0V = False/Ramp
+5V to +15V Transition region
YES C7
Digital Input 3
Current Demand Isolate
This input alters the drive operation from Speed
Control to Current Control. When digital input
No. 3 is true, analog input No. 2 provides the
current demand and the speed loop is
disconnected. When false the speed loop is in
control and analog input No. 2 is an auxiliary
speed setpoint.
+24V = True/Current
0V = False/Speed
+5V to +15V Transition region
YES C8
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