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Limitorque QX Electronic Actuator FCD LMENIM3306-06 – 07/14
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3.3.3 Sealing Cable/Conduit Entries
The sealing of cables and conduit entries should be done in accordance with National Standards or the Regulatory
Authorities that have certified the actuators. This is particularly true for units that are certified for use in hazardous areas
where the method of sealing must be to an approved standard and cable glands, reducers, plugs, and adapters must be
approved and separately certified. All conduit entries should be sealed against the climatic conditions prevailing on-site,
especially if temporary submersion is possible. All unused conduit entries should be sealed with threaded metal plugs.
Plastic plugs are installed by Limitorque for shipping only and must not be used as permanent seals.
3.3.4 Recommended Terminal Connections
Power Terminals
Ring tongue connectors used on the power terminals should comply with the dimensions shown in Figure 3.3. For
Additional information, consult terminal manufacturer.
Table 3.2 details the allowable voltage and current parameters for the terminal block power terminals. Preload the M5
screws to 1.6-3.2 N m (1.2-2.33 ft-lb).
Control Terminals
Ring tongue connectors used on the control terminals should comply with the dimensions shown in Figure 3.5. For
additional information, consult terminal manufacturer. Preload the M3 screws to 0.33-0.66 N m (0.25-0.50 ft-lb).
NOTE: Alternative manufacturers may be substituted only if dimensions are in accordance with Figure 3.5.
NOTE: The use of spade terminals is not recommended for secure electrical connections.
Figure 3.3 – Power terminal connector size limitations - all dimensions are in mm
NOT TO
EXCEED 15
NOT TO
EXCEED 6.5
NOT TO
EXCEED 9.8
TO BE SIZED
FOR M5 SCREW
SPADE AND SNAP
TERMINALS
MAX. THICKNESS = 1.6 mm
TO BE SIZED
FOR M5 SCREW
NOT TO
EXCEED 9.6
NOT TO
EXCEED 15
RING TERMINAL
NOT TO
EXCEED 3.5
FLANGED
SPADE TERMINAL
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