Auxiliary power supply, I/o wiring examples, Auxiliary power supply i/o wiring examples – Rockwell Automation 20D PowerFlex 700H and 700S Frame 9...14 Drives User Manual
Page 37
Rockwell Automation Publication PFLEX-IN006E-EN-P - July 2013
37
Control Wiring for PowerFlex 700H Drives
Chapter 2
Auxiliary Power Supply
You may use an auxiliary power supply to keep the 700H control unit energized,
when input power is de-energized. This provides back-up power for the control
unit and is sufficient for setting parameters. Connect 24V DC power to pin 19
and 24V DC common to pin 20 of the 24V DC version of the I/O card.
Table 13 - Auxiliary Power Supply Specifications
If 24V terminals of several drives are connected in parallel, it is recommend that a
diode circuit to block current flow in the opposite direction is used. Reverse
current flow could damage the control board.
I/O Wiring Examples
Voltage
Current (Min)
Current (Max)
24V DC ± 15%
150 mA
250 mA
Input/Output
Connection Example
Required Parameter Changes
Potentiometer Unipolar
Speed Reference
10k
Ω
Pot. Recommended
(2 k
Ω
Minimum)
• Set I/O configuration (see Analog I/O
).
• Adjust Scaling:
Parameters 91 [Speed Ref A Hi] / 92
[Speed Ref A Lo] and 325 [Analog In 2 Hi] /
326 [Analog In 2 Lo]
• View Results:
Parameter 002 [Commanded Speed]
Joystick Bipolar Speed
Reference
±
10V Input
Important: See the Attention
statement on page
31
for
important information on
bipolar wiring.
• Set I/O configuration (see Analog I/O
).
• Set parameter 190 [Direction Mode] = 1
“Bipolar”
• Adjust Scaling:
Parameters 91 [Speed Ref A Hi] / 92
[Speed Ref A Lo] and 325 [Analog In 2 Hi] /
326 [Analog In 2 Lo]
• View Results:
Parameter 002 [Commanded Speed]
:19
:20
From Auxiliary
Power Supply
:19
:20
:19
:20
:19
:20
24V dc
Power
24V dc
Common
3
4
6
6
7
3
6
4
7
5