Black BLK-SY10 Series Manuel d'utilisateur télécharger pdf (Page 2)

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN

N40067 - 7/11 - Subject to change. © Belimo Aircontrols (USA), Inc.

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 ﬂ exible conduit.

Always read the controller manufacturer’s installation

literature carefully before making any connections. Follow all

instructions in this literature. If you have any questions, contact

the controller manufacturer and/or Belimo.

Transformer(s)

Belimo actuators require a 24 VAC Class 2 transformer. The

actuator enclosure cannot be opened in the ﬁ eld, there are no

parts or components to be replaced or repaired.

– EMC Directive: 2004/108/EC

– Software Class A: Mode of Operation Type 1

– Low Voltage Directive: 2006/95/EC

Example: 3 AF Actuators Supplied, 16 Ga. wire (refer to table on

page 3)

350 ft. (allowable wire length) ÷ 3 actuators = 117 ft. maximum wire run

CAUTION: It is good practice to power electronic or digital controllers

from a separate power transformer than that used for actuators or other

end devices. The power supply design in our actuators and other end

devices use half wave rectiﬁ cation. Some controllers use full wave

rectiﬁ cation. When these two different types of power supplies are

connected to the same power transformer and the DC commons are

connected together, a short circuit is created across one of the diodes in

the full wave power supply, damaging the controller. Only use a single

power transformer to power the controller and actuator if you know the

controller power supply uses half wave rectiﬁ cation.

Multiple actuators, one transformer

Multiple actuators may be powered from one transformer provided the

following rules are followed:

1. The TOTAL current draw of the actuators (VA rating) is less than or

equal to the rating of the transformer.

2. Polarity on the secondary of the transformer is strictly followed.

This means that all No. 1 wires from all actuators are connected

to the common leg on the transformer and all No. 2 wires from all

actuators are connected to the hotleg. Mixing wire No. 1 & 2 on one

leg of the transformer will result in erratic operation or failure of the

actuator and/or controls.

Multiple actuators, multiple transformers

Multiple actuators positioned by the same control signal may be powered

from multiple transformers provided the following rules are followed:

1. The transformers are properly sized.

2. All No. 1 wires from all actuators are tied together and tied to the

negative leg of the control signal. See wiring diagram.

Wire type and wire installation tips

For most installations, 18 or 16 Ga. cable works well with Belimo

actuators. Review job requirements and determine whether a plenum

or appliance rated cable is appropriate. Use code-approved wire nuts,

terminal strips or solderless connectors where wires are joined. It is

good practice to run control wires unspliced from the actuator to the

controller. If splices are unavoidable, make sure the splice can be

reached for possible maintenance. Tape and/or wire-tie the splice to

reduce the possibility of the splice being inadvertently pulled apart.

Wire length for actuator installation

Keep power wire runs below the lengths listed in the following tables.

If more than one actuator is powered from the same wire run, divide

the allowable wire length by the number of actuators to determine the

maximum run to any single actuator.

Typical Transformer Sizing

Actuator Series Voltage

Required VA

Per Actuator

EFB, EFX 24 16

AFB, AFX 24 10

AF 24 10

NFB, NFX 24 9

LF 24 7

TF 24 5

GMB 24 7

AMB / ARB 24 6

NMB 24 6

LMB / LRB 24 3

CMB 24 1.5

AHB 24 4.5

LHB 24 3

LUB 24 3

AMQB 24 26

NMQB 24 23

LMQB 24 23

AHQB 24 23

LHQB 24 23

GK / GKR 24 21

NK 24 22

AHK 24 20

General Wiring Instructions

Wiring for Damper Actuators and Control Valves

1 2 3 4 5 6 7 ... 43 44

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Black BLK-SY10 Series Manuel d'utilisateur Page 2

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