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DC Input Power Model Power Supply Requirements
Control Supply
Current
Bus Voltage
8.1 C
V
ONTROL
The control voltage range for normal operation is + 10 VDC to + 90 VDC. The control voltage
can either be wired to the bus voltage so one supply can power the drive, or from a separate
supply. Separately powering the control from the bus allows the bus to be powered down for
safety while drive status and fault information remain available. A single + 10 VDC to + 30 VDC
supply can be shared by Control and I/O.
NOTE
8.2 G
ROUNDING
Provide safety isolation with the external bus and control supplies from the power line.
NOTE
The Ctrl and Bus voltages and non-opto coupled I/O grounds (I/O RTN) are tied together
inside the drive. The Ctrl and Bus power supplies share a ground pin (Bus/Ctrl Gnd). Join and
connect to the negative terminals of the Ctrl and Bus power supplies. The I/O RTNs are
normally connected to the signal ground of the system. (Some of the I/O is opto coupled and
have separate returns. Thoroughly review this document for details.)
Earth the power supply negative terminal somewhere in the cabinet. Also earth the chassis. In
normal operation, there should be no significant voltage between earth and the Bus/Ctrl Gnd
and I/O RTNs.
NOTE
8.3 B
C
US
APACITANCE
There is a minimum requirement on the output capacitance of the bus power supply for the DC
input S200. This capacitor is needed to absorb energy during motor deceleration and motor
disable and to help provide energy during motor acceleration. For multiple S200 drives
operated from one supply the recommendation is to increase the capacitance according to the
number of drives. For example, for four 6 A / 18 A
40
20 to 110 mA at 75 VDC
60 to 330 mA at 24 VDC
125 to 660 mA at 12 VDC
Bus voltage outside the operating range (20 to 90 V) causes an under-
voltage or over-voltage fault. Under-voltage and over-voltage faults self
clear when the fault condition clears.
Do Not allow the Bus Voltage to exceed
+ 90 VDC. This causes damage to the
NOTE
drive.
Target design center voltage for unregulated supply is + 70 to + 75 VDC.
This provides 15 to 20 VDC margin for line tolerance, transformer
regulation, and regen pump up. Design center voltage for a regulated
supply can be up to + 80 VDC.
OLTAGE
Do Not allow the Control Voltage to exceed + 90 VDC as it can damage the
drive.
The drive cannot be powered from an electrically Hot supply as it does not
contain an isolation barrier.
The maximum voltage allowed between Bus/Ctrl Gnd and chassis is 100
VDC.
4/13/2012
DC S200 drives powered from one 75
RMS
Kollmorgen
S200 Position Node Installation Guide
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