Belimo LRX User manual

INSTRUCTION MANUAL
LRX, NRX, ARX, AKRX Actuators
with Electronic Pressure Independent Valves (ePIV)
71613-00001.C
WIRING DIAGRAM
LRX, NRX, ARX, AKRX
2 to 10 VDC Flow Feedback Signal (+)
2 to 10 VDC control signal for Non-Spring Return and
Electronic Fail-Safe
4 to 20 mA control signal for Non-Spring Return and
Electronic Fail-Safe
MP
Line
Volts
(–)
(+)
Blk (1) Common
Red (2) Hot +
Wht (3) Y Input
Org (5) U Output
Position
Feedback VDC
1 2
24 VAC Transformer
21
2 to 10 VDC control signal for Non-Spring Return and
Electronic Fail-Safe
Floating Control Signal
BLK
Black
Negro
Noir
Preto
RED
Red
Rojo
Rouge
Vermelho
WHT
White
Blanco
Blanc
Branco
ORG
Orange
Anaranjado
Orange
Alaranjado
1
1Provide overload protection and disconnect as required.
2CAUTION Equipment damage!
Actuators may be connected in parallel.
Power consumption and input impedance must be observed.
21 IN4004 or IN4007 diode required.
Meets UL requirements without the need of an electrical ground connection.
Subject to change. © Belimo Aircontrols (USA), Inc.

2
INSTRUCTION MANUAL
LRX, NRX, ARX Modbus Actuators
with Electronic Pressure Independent Valves (ePIV)
24 VAC/DC Transformer
Line
Volts
Blk (1) Common
Red (2) + Hot
Wht (3)
Org (5)
Pnk (6)
Gry (7)
MFT
D-
D+
Modbus (RS-485)
24 VAC/DC Transformer
Line
Volts
Blk (1) Common
Red (2) + Hot
Wht (3)
Org (5)
Pnk (6)
Gry (7)
MFT
D-
D+
Modbus (RS-485)
Δp
Modbus control for Non-Spring Return Modbus control with switching contact for Non-Spring Return
Note:
Modbus signal assignment:
C1= D- = A
C2= D+ = B
Power supply and communication are not
galvanically isolated.
Interconnect ground signal of the devices.
Requirements for switching contact:
The switching contact must be able to accurately switch a current of
16 mA at 24 V.
24 VAC/DC Transformer
Line
Volts
Blk (1) Common
Red (2) + Hot
Wht (3)
Org (5)
Pnk (6)
Gry (7)
MFT
D-
D+
Modbus (RS-485)
24 VAC Transformer
Line
Volts
Blk (1) Common
Red (2) + Hot
Wht (3)
Org (5)
Pnk (6)
Gry (7)
MFT
D-
D+
Modbus (RS-485)
OPEN

max
CLOSED Bus mode
Modbus control with active sensor for Non-Spring Return Modbus control with local override (AC only, analogue override)
for Non-Spring Return
Possible input voltage range:
0...32 V (resolution 30 mV)
Note:
If no sensor is integrated, then connection 3 (Y) is available for the protective
circuit of a local override control. Options: CLOSED, Vmax, OPEN
BLK
Black
Negro
Noir
Preto
RED
Red
Rojo
Rouge
Vermelho
WHT
White
Blanco
Blanc
Branco
ORG
Orange
Anaranjado
Orange
Alaranjado
PNK
Pink
Rosado
Rosa
Cor-de ros
GRY
Gray
Gris
Gris
Cinza
WIRING DIAGRAM
ModBus Actuators - LRX, NRX, ARX
71613-00001.C
Subject to change. © Belimo Aircontrols (USA), Inc.