7
User Manual EE872 Modular Probe for CO
2
, RH, T and p
Fig. 2 Dimensions of optional radiation shield (accessory HA010510)
3.3 Connectivity
Pin number Function
Wire colors for accessories:
- Couplig flange HA010705
- Connection cable HA010819/820/821
1
Supply voltage
brown
2
B RS485 (D-) or voltage output
white
3
GND
blue
4
A RS485 (D+) or current output
black
5
Configuration pin
gray
mA
2
4
5
1
3
V
+
-
Voltage output
Current output
GND analogue output
Power supply 10 - 35 V DC*
GND
front view
1
2
3
4
5
*The supply circuit must be fused with
≤
8A
front view
M12 male connector
Fig. 3 Pin and flying leads assignment
3.4 Selection between Analogue Output and RS485 Interface
Configuration pin connected to GND:
• Independently of its original factory configuration, the EE872 features analogue outputs.
Configuration pin not connected:
• EE872 set to RS485 interface (option P1 in the order code): features RS485 interface.
• EE872 set to analogue outputs (option GA7 or GA11 in the order code): the RS485 interface is active
for the first 10 seconds after power on and awaits connection with the EE-PCS Product Configuration
Software. This allows for setup changes or adjustment of the EE872. If the connection to EE-PCS is
not established within 10 seconds, the device automatically changes to analogue output.
Change of the factory setup:
An EE872 set originally to analogue output can be changed to RS485 interface and vice versa using
the optional USB configuration cable and the free EE-PCS Product Configuration Software, see chapter
“Setup and Adjustment” below.
Please note: By changing the EE872 configuration, the product and the packaging label lose their vali-
dity. Please see “Relabeling in case of product configuration changes” at
fileadmin/data/product/Configuration/Configuration_e.pdf
.
