Cam expansion port
USB conf. port
CAM link status LED
Profibus Bus Fault LED
Slave Fault LED
Power OK status LED
18mm
(0.71”)
99mm
(3.9”)
35mm
DIN rail
mount
Mounting foot
24 Vdc
CAM/PXR link
PIN
Shell
1
2
3
4
5
6
7
8
9
Signal
Ground
NC
NC
Profibus B/D+
RTS
ISO COM
ISO 5V
NC
Profibus A/D-
NC
DIN
Relay
Mounting foot
Spring
clip
Profibus (DP) communication adapter module
Instruction Leaflet IL120009EN
Effective March 2017
PXR-PCAM
Figure 1. Left = front view, right = side view
For use with PXR 20/25 electronic
trip units (ETUs). The PXR-PCAM
is designed to connect with a
circuit breaker’s CAM-PXR link
and expand the communication
capabilities into a slave Profibus
DP interface.
The module also provides limited
discrete I/O, circuit breaker control
capability, and data storage rele-
vant to the breaker. The module
is mounted local to the breaker to
keep the CAM-PXR link limited to
3m maximum
PXR –PCAM adapter
module specifications
•
Weight: 0.36 lb.
•
Housing width, height, length
(30 x 111 x 111mm)
•
Housing NEMA 1, IP20
•
Pollution degree 3, pcb is
conformally coated
•
Operational/storage
temperature: -20 to +70ºC / -45
to + 85ºC
•
Elevation: 0 - 2000m, humidity
5 - 95% noncondensing
•
CE mark, RoHS compliant
•
Safety: IEC/EN/UL61010-1, UL
file # E185559
•
CNL evaluation to CAN/
C22.2 No 1010.1.92
•
EMC EN61326 - IEC61000-4-X
level 3
•
Emmisions: conducted and
radiated
•
FCC part 15 & CISPR 11/22
class B
All terminal blocks
are remov-
able, 5.08 mm (0.200”) and
support wires of 0.2-2.03 mm
2
( 24-14 AWG). Ferrules recom-
mended for wire termination.
Power supply
24 Vdc +/- 20%,
6W maximum isolated CAM input
power with common/0V clamped
300V to GND. terminal identifica-
tion “TP.1-.3.” Connect TP1 near
CAM to assembly enclosure
ground as a functional ground.
DIN
Three 24 Vdc +/-20% inputs
externally wetted, shared common
with ~5.0k ohm input impedance,
5mA draw. Terminal identification
TD.1-.4, shared with relay terminal.
DOUT
− Two form A relays exter-
nally sourced, shared common hot
240 Vac/30 Vdc 2A CAT II max.
Terminal identification TD.5-.7. In
breaker mode (command format
0), relay 1 (TD5) is used to close
the breaker when Profibus control
is enabled, and relay 2 (TD6) is
used to open the breaker when
Profibus control is enabled. In
general mode (command format
1), relay 1 and relay 2 are used
for general purposes, and may be
independently opened and closed.
PB
- DB9 Profibus DP interface,
shell grounded through TP1.
(
see Figure 1
)
Catalog
number
Ethernet
protocol Style #
PXR-PCAM Profibus
DP slave
66D2355G01
WARNING
Be sure that all distribution
power is off when commission-
ing a PXR-PCAM with a circuit
breaker system. The module can
be powered temporarily via the
USB configuration port or
permanently with the 24 Vdc
power supply input.
IMPORTANT
Download the GSD file for the
PXR-PCAM on the Eaton website.
www.eaton.com/CAM
PXR-PCAM
Fuse
Source
24 Vdc
source
Loads
Cassette
switches
Test
Rack out
5mA each
input
<30m
ISO
Rack in
+
+
-
-
DOUT
COM
TD.7
TD.6
TD.5
TD.4
TD.3
TD.2
TD.1
COM
RLY2
RLY1
IN1
IN2
IN3
DIN
Figure 2. Discrete input and output connections
