Danaher Motion
05/2008 DC Input Power Model Power Supply Requirements
S200-CNS Product Manual
43
Bus Voltage
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.
NOTE
Do Not allow the Bus Voltage to exceed
+ 90 VDC. This causes damage to the
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.
9.1 C
ONTROL
V
OLTAGE
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 10 VDC to + 30 VDC supply can be
shared by Control and I/O.
NOTE
Do Not allow the Control Voltage to 90 VDC as it can damage the
drive.
9.2 G
ROUNDING
Provide safety isolation with the external bus and control supplies from the power line.
NOTE
The drive cannot be powered from an electrically Hot supply as it does not
contain an isolation barrier.
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
The maximum voltage allowed between Bus/Ctrl Gnd and chassis is 100
VDC.
9.3 B
US
C
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
RMS
DC S200 drives powered from one 75 VDC supply the recommended
minimum bus output capacitance of the supply is 4 x 4,000 µf = 16,000 µf. Bus capacitor voltage
rating should be 100 V. Bus capacitor type is aluminum electrolytic.