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© 2007 Schneider Electric. All Rights Reserved.
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63230-216-229-B1
Installation
ACE919CA and ACE919CC
RS485/RS485 Converters
Function
PE50036
The ACE919 converters connect a master/central computer equipped with an RS485
type serial port to stations that are connected to a two-wire RS485 network.
The ACE919 converters perform network polarization and impedance matching
without requiring any flow control signals.
The ACE919 converters also provide a 12 V DC or 24 V DC supply for the distributed
power supply of the Sepam™ ACE9492, ACE959, or ACE969 interfaces.
There are two types of ACE919 converter:
b ACE919CC, DC-powered
b ACE919CA, AC-powered
ACE919CC RS485/RS485 converter.
Characteristics
DANGER
Mechanical Characteristics
HAZARD OF ELECTRIC SHOCK,
EXPLOSION, OR ARC FLASH
b Only qualified electrical workers should
install this equipment. Such work is
performed only after reading this entire set
of instructions.
b NEVER work alone.
b Before performing visual inspections,
tests, or maintenance on this equipment,
disconnect all sources of electric power.
Assume that all circuits are live until they
have been completely de-energized,
tested, and tagged. Pay particular
attention to the design of the power
system. Consider all sources of power,
including the possibility of backfeeding.
b Always use a properly rated voltage
sensing device to confirm that all power is
off.
b Start by connecting the device to the
protective ground and to the functional
ground.
b Screw tight all terminals, even those not in
use.
Failure to follow these instructions will result
in death or serious injury.
Weight 0.280 kg (0.617 lb)
Assembly On symmetrical or asymmetrical DIN rail
Electrical Characteristics ACE919CA ACE919CC
Power supply 110 to 220 V AC
±10%, 47 to 63 Hz
24 to 48 V DC ±20%
Protection by time-delayed fuse 5 mm x 20 mm
(0.2 in x 0.79 in)
1 A rating 1 A rating
Galvanic isolation between ACE power supply
and frame, and between ACE power supply
and interface supply
2000 Vrms, 50 Hz,
1 min
Communication and Sepam™ Interface Distributed Supply
Data format 11 bits: 1 start, 8 data, 1 parity, 1 stop
Transmission delay < 100 ns
Distributed power supply for Sepam™
interfaces
12 V DC or 24 V DC
Maximum number of Sepam™ interfaces with
distributed supply
12
Environmental Characteristics
Operating temperature –5°C to +55°C (+23°F to +131°F)
Electromagnetic Compatibility Standard Value
Fast transient bursts, 5 ns IEC 60255-22-4 4 kV with capacitive
coupling in common
mode
2 kV with direct
coupling in common
mode
1 kV with direct
coupling in differential
mode
1 MHz damped oscillating wave IEC 60255-22-1 1 kV common mode
0.5 kV differential
mode
1.2/50 µs impulse waves IEC 60255-5 3 kV common mode
1 kV differential mode
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