590 Series DC Digital Drive Installing the Drive
3-19
Control Connections continued
Signal 0V, Speed Setpoint No. 1, Speed Setpoint No. 2/Current Demand
Signal 0V (A1)
This is the common reference point for all analog
signals used in the drive.
For non-reversing applications and 2 quadrant
controller (591 and 599), the speed demand only
needs to operate between 0V and +10V, the anti-
clockwise end of the potentiometer should then be
connected to Terminal A1 (0V).
Speed Setpoint No. 1 (A2)
Terminal A2 (Analog Input 1) is a direct speed
demand by-passing the "Setpoint Ramp Generator",
and should be used if direct control is required.
Speed Setpoint No. 2/
Current Demand (A3)
Terminal A3 (Analog Input 2) is a dual function
terminal (either "Speed Setpoint No. 2" or "Current
Demand") as selected by mode switch control
"Current Demand Isolate", Terminal C8. As a speed
setpoint, it can be used in the same way as Terminal
A2.
If more than one speed setpoint is used they are
additive.
SET
SPEED
10K
B9A1 B8 C5 C3
B3A4B4A8A3
A2
A6
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