590+ Series DC Digital Converter - ssdservice.pl

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• Use screened control cables to comply with EMC requirements.
• Control wiring must have a minimum cross-section area of 0.75mm 2 (18AWG).
• Feed the control cables into the Converter and connect to the control terminals. Refer to the
connection label on the inside of the hinged terminal cover. Close the terminal cover.
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For normal operation the speed demand signal is connected to the
"Setpoint Ramp Input", terminal A4 (Analog Input 3). This input is scaled
so that:
+10V input = maximum forward speed demand (+100%)
B4
-10V input = maximum reverse speed demand(-100%)
The speed demand signal can be generated by connecting the two
ends of an external 10K potentiometer to the +10V reference
terminal B3 and -10V reference terminal B4, the wiper of the
potentiometer being connected to the "Setpoint Ramp Input" as the
speed reference.
The main current limit is adjustable by means of the MAIN
CURR. LIMIT parameter [Tag No. 15]. For normal operation of
the main current limit, Terminal A6 should be connected to the
+10V reference, Terminal B3, and the CURR. LIMIT/SCALER
should be set to 200%. This allows the MAIN CURR. LIMIT
parameter to adjust the current limit between 0 and 200% full load
current. If external control of the main current limit is required, a
10K potentiometer connected between Terminal B3 (+10V Ref)
and Terminal B1(0V), with the wiper connected to Terminal A6
(Analog I/P5) gives 0 to 200% of full load current provided that
MAIN CURR. LIMIT and CUR. LIMIT/SCALER are set to
200%.
MINIMUM
CONNECTION
8REQUIREMENT
A4
10K
SETPOINT
RAMP
INPUT
B3
A6
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This is the common reference point for all analog
signals used in the drive.
For non-reversing applications and 2 quadrant
controller (591+), 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).
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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.
SIGNAL 0V
SPEED SETPOINT No. 1
SPEED SETPOINT No. 2/
CURRENT DEMAND
A1
A2
B9
A3
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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.
8