Hach ORBISPHERE 51 Serie Manuel D'utilisation Simplifié page 13

Measurement alarms relays:
1. Common
2. Output relay 1
3. Output relay 2
4. Output relay 3
Digital inputs:
9. EC sensor: Not used
9. TC sensor: Hold input. To deactivate the sensor from a PLC system, connect
a dry contact between J7.9 and J7.12
10. to 11. Not used
12. Digital GND
13. to 16. Not used
Analog inputs (when ext. press. sensor is directly
connected):
12. EC sensor: Not used
12. TC sensor: GND
13. Green: Input ext. press. sensor P+
14. White: Input ext. press. sensor P-
15. Red: Output ext. press. sensor +
16. Black: Ground (GND)
Note: On multi channel systems, the external pressure sensor must be wired to the channel 1 measurement board, but the signal is
used to compensate all channels.
Connector J8 (sensor)
The numbers listed below refer to the 10 available J8 connections (from left to right) in
colors indicated are the wire colors in the sensor cable.
Note: Remember, this connector is colored orange for EC sensors and black for TC sensors.
A1100 EC
sensor
1. Guard electrode
2. RS485A+
3. Thermistor A
4. Anode electrode
5. RS485B
6. Thermistor B
7. GND
8. + 5V
9. Cathode
electrode
10. Not used
31xxx EC sensor 31xxxS smart EC
sensor
Guard electrode Guard electrode
Not used I2C-SCL
Thermistor A Thermistor A
Anode electrode Anode electrode
Not used I2C-SDA
Thermistor B Thermistor B
Not used GND
Not used + 5V
Cathode electrode Cathode electrode -5V power
Not used Not used
Analog inputs (when ext. press. sensor extension,
Part N° 32548.xx, is used):
12. EC sensor: Not used
12. TC sensor: GND
13. Green: Input ext. press. sensor P+
14. Yellow: Input ext. press. sensor P-
15. White: Output ext. press. sensor +
16. Brown: Ground (GND)
TC sensor
GND for power Yellow
V2 signal
Solenoid
Relay coil
+12V power
+24V power
V3 signal
GND for signal Green
Temperature
Analog current (or voltage)
outputs:
5. Analog GND
6. Output 1
7. Output 2
8. Output 3
Figure 9. The
Sensor LEMO
cable wall 10 cable
or panel portable
Brown
Pink Red
Grey Orange
Red Yellow
Purple Green
White Blue
Black Purple
Grey
Blue White
Brown Black
English 13