Humidity & Temperature Devices > Transmitter > HF5A > Customer Adjustment

Output Monitoring Mode

Error messages of 3/4-wire Transmitter:

Variants	Description	Output
HF5A-31D0300210100	3-/4-wire with Display	Analog 0(4)...20 mA, 0...5(10) V
HF5A-31X0000210100	3-/4-wire without Display	Analog 0(4)...20 mA, 0...5(10) V
HF5A-D1D0300210100	3-/4-wire with Display	Analog 0(4)...20 mA, 0...5(10) V & Digital Modbus RTU
HF5A-D1X0300210100	3-/4-wire without Display	Analog 0(4)...20 mA, 0...5(10) V & Digital Modbus RTU

Connection Diagram

3-wire HF5A-31 & HF5A-D1 / 4-wire HF5A-31 & HF5A-D1:

Terminal Overview	Connection diagram
3-wire (J1 mounted)	Current	Voltage

Terminal Overview	Connection diagram
4-wire (J1 unmounted)	Current	Voltage

Terminal	Description
K1-1-V-	Power Supply -
K1-2-V+	Power Supply +
K1-3-OUT2-	Analog output 2-
K1-4-OUT2+	Analog output 2+
K1-5-OUT1-	Analog output 1-
K1-6-OUT1+	Analog output 1+

Note: Recommendation of Rotronic - 4 - wire galvanic separated with unmounted Jumper J1 - with the benefit that the power supply and the outputs are

separated galvanic isolated. Per default, the Jumper J1 is mounted.

In order to get the normal operation status Green, the following errors have to be resolved:

Output Monitoring current:

Error-Message_2_wire_Power Error1_blinking

Output-Monitoring-HF5A,3,4wire_Channel1

To prevent an error message within the current Output Monitoring, the current version should have at least a 100 Ohm Resistor applied to the OUT1+ and OUT1-,

respective OUT2+ and OUT2-.

In order to maintain an error free operation, either the analogue Outputs must have a load or the Analog Outputs are programmed with HygroSoft to Unused.

Load

Type	Power supply	Load	Output
2-wire
HF5A-21	18...36 VDC	Max. 500 Ω	4...20 mA
3- / 4-wire
HF5A-31	18...36 VDC	Max. 500 Ω	4...20 mA
			0...20 mA
		Min. 10 kΩ	0...5 V
			0...10 V
HF5A-D1		Max. 500 Ω	4...20 mA
			0...20 mA
		Min. 10 kΩ	0...5 V
			0...10 V
		-	Digital RS485

Output Monitoring voltage:

Error-Message_2_wire_Power Error1_blinking

Output-Monitoring-HF5A,3,4wire_Channel1

To prevent an error message within the voltage Output Monitoring, the voltage version should have at least a 10kOhm Resistor applied to the OUT1+ and OUT1-, respective OUT2+ and OUT2-.

In order to maintain an error free operation, either the analogue Outputs must have a load or the Analog Outputs are programmed with HygroSoft to Unused.