Operating instructions
R3G310-AX54-21
Translation of the original operating instructions
4.5 Connection screen
No.
Conn.
Designation
Function / assignment
KL1
1, 2
L1/N
Mains connection, power supply; see technical data for nominal voltage range
PE
PE
PE
Earth connection, PE connection
KL2
1
NO
Status relay, floating status contact, make for failure
KL2
2
COM
Status relay, floating status contact, changeover contact, common connection, contact rating, max. 250 VAC/2
A (AC1)/min. 10 mA
KL2
3
NC
Status relay, floating status contact, break for failure
KL3
1
RSA
Bus connection RS-485, RSA, MODBUS RTU; SELV
KL3
2
RSB
Bus connection RS-485, RSB, MODBUS RTU; SELV
KL3
3
GND
Signal ground for control interface, SELV
KL3
4
Ain1 U
Analogue input 1, set value: 0-10 V, Ri = 100 kΩ, parametrisable curve, only for use as alternative to input
Ain1; SELV
KL3
5
+10 V
Fixed voltage output 10 VDC, +10 V +/-3 %, max. 10 mA, short-circuit-proof, power supply for ext. devices
(e.g. potentiometer); SELV
KL3
6
Ain1 I
Analogue input 1, set value: 4-20 mA; Ri = 100 Ω, parametrisable curve, only for use as alternative to input
Ain1 U; SELV
KL3
7
Din1
Digital input 1: Enabling of electronics,
Enabling: Pin open or applied voltage 5-50 VDC
Disabling: Bridge to GND or applied voltage <1 VDC
Reset function: Triggers software reset after a level change to <1 VDC; SELV
KL3
8
Din2
Digital input 2: Parameter set 1/2 switching, depending on EEPROM setting, the valid/used parameter set can
be selected via the bus or via the digital input DIN2.
Parameter set 1: Pin open or applied voltage 5-50 VDC
Parameter set 2: bridge to GND or applied voltage <1 VDC; SELV
Item no. 50235-5-9970 · ENG · Revision 212555 · Release 2020-04-29 · Page 10 / 15
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