Belimo PR Instruction Manual Download Page 4

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WIRING DIAGRAMS

Floating Point

PR and PKR Actuators 

End Switches

Temp Sensor

VDC / 4 to 20 mA

BACnet

24 to 240 VAC

or

24 to 125 VDC

N               
L                 
Y

1

Y

2

 

N

Com
D +
D  -

Com 
Bacnet D +              
D -

Notes:

0˚ to 90˚ 

default 85˚

4

1

!

Meets cULus requirements without the need of an 

electrical ground connection.

 

5

Only connect common to neg. (-) leg of control circuits.

1

Provide overload protection and disconnect as required.

46

Actuators may be controlled in parallel. Current draw 

and input impedance must be observed

4

Two built-in auxiliary switches (2x SPDT), for end 

position indication, interlock control, fan startup, etc.

Universal Power Supply (UP) models can be supplied

with 24 VAC up to 240 VAC, or 24 VDC up to 125 VDC. 

Optional: end switch adjustment

On/Off

N               
L                 

Y

1

Y

2

    

1

UP

46

!

Common               
+ Hot                

Input CCW (open)

Input CW (close)

24 to 240 VAC 

or 

24 to 125 VDC

N               
L                 

Y

1

Y

2

    

1

UP

46

!

Common               
+ Hot                

Input CCW (open)

Input CW (close)

24 to 240 VAC 

or 

24 to 125 VDC

N                
L                  

Y

1

Y

2

    

Common                
+ Hot                

Input CCW (open)

Input CW (close)

24 to 240 VAC 

or 

24 to 125 VDC

1

UP

46

1

!

On/Off

N               
L                 
Y

1

Y

2

 

N

5

UP

46

24 to 240 VAC

or 

24 to 125 VDC

-
+                 
Y

3

U5

Com -
24 VDC Out                
Y

3  

0 - 10 VDC**

U5/MP 0 - 10 VDC

1

**Control type, direction and fail position changes can be

made via Belimo Selection Tools, i.e. ZTH, PC-Tool and App.

!

During installation, testing, servicing and troubleshooting 

of this product, it may be necessary to work with live 

electrical components. Have a qualified licensed 

electrician or other individual who has been properly 

trained in handling live electrical components perform 

these tasks. Failure to follow all electrical safety 

precautions when exposed to live electrical components 

could result in death or serious injury.

 

Power

Status

5

6

Push-buttons and display

PE

PE

PE

PE

PE

B

A

1

2

3

op

e

n

op

e

n

S2 S3

S1

S5 S6

S4

S5 S6

S4

10°

S2 S3

S5 S6

S4

S5 S6

S4

S1 S2 S3 S4 S5 S6

4

Disconnect power. 

1  

Gear disengagement

Open the manual override cover and insert the hand crank.

Manual override is possible. 

Manual override

2

    

 

Turn the hand crank until         indicates the desired switching 

position and then remove the crank.

A

B

3

Auxiliary switch

Open the auxiliary switch adjustment cover and properly seat 

the hand crank into the actuator.         Turn the crank until 

the arrow points to the vertical line.

4

     

Terminals

Connect continuity tester to S4 + S5 or to S4 + S6.

If the auxiliary switch should switch in the opposite direction, 

rotate the hand crank by 180˚.

5

     

LED Display Green

Off: No power supply or malfunction, On: In operation 

Press button: Triggers test run, followed 

by standard mode.

6

     

LED Display Yellow

Off: Standard mode, On: Test run active.

QUICK MOUNT VISUAL INSTRUCTION MANUAL

PR and PKR Actuators 

with 3-Way Butterfly Valves

7

3

 

NEMA 4X

12 in-lb

 

2

N

o

WARNING: The wiring technician must be trained and 

experienced with electronic circuits. Disconnect power 

supply before attempting any wiring connections or 

changes. Make all connections in accordance with wiring 

diagrams and follow all applicable local and national codes. 

Provide disconnect and overload protection as required. 

Use copper, twisted pair, conductors only. If using electrical 

conduit, the attachment to the actuator must be made with 

flexible conduit.

0%

1

8

Aux. Switches

Power

Signal Temp.

BACnet

Wire Separator

NEMA 4X

PE

4

2

1

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