Electrical Wiring - Emerson EL-O-MATIC EL Serie Guía De Referencia

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1 Installation
CAUTION
* Do not attempt to store, install, or operate your
EL-O-MATIC™ EL actuator without taking ac-
count of the following;
1.1

Electrical wiring

1 The control circuitry feeding the actuator must
not allow power to be supplied to both "open" and
"close" motor windings at the same instance in time.
* Example: when power is applied to the "open"
terminal, the "close" terminal must be isolated from
the power supply and vice versa.
* Failure to do so will result in the motor overheating.
2 If several actuators are controlled from a common
control switch, which has only a DPDT type electri-
cal contact on it, then the result can be that the
actuators will run in different directions.
* Example: An open/stop/close switch with only
DPDT contacts on it controls three actuators.
* When the switch is turned to the open control posi-
tion, all three actuators will start to run open. If any
one of the three actuators reaches its open position
before the other two it can receive power via the
common DPDT contacts and the other actuators
close motor winding, resulting in that actuator run-
ning closed.
3 When several actuators are required to be con-
trolled in parallel with one 3 position switch, that
switch must have separate contacts for each actua-
tor being controlled.
4 Use wire with proper gauge and insulation (follow
standards prescribed by the relevant electrical
code).
5 Actuator housing must be correctly grounded.
6 Use appropriate conduit or cable glands for weather
proof or flame proof (Ex db) applications.
7 Each actuator is shipped with the appropriate wir-
ing diagram. Follow the wiring diagram to ensure
proper connection of power and control voltage to
the actuator.
8 Make all splices or connections using the correct
pin connector or terminal strip.
9 Wiring dimensions internal terminal strip:
0.3 to 3.3 mm² (22 to 12 AWG)
2
ATEX Reference Guide EL Electric actuators
1.2 Storage
Without correct storage or assembly the drives are not
weather-proof
Warehouse Storage
1 Actuators should be stored in a clean, dry ware-
house free from excessive vibration and rapid
temperature change.
2 Actuators should not be stored on any floor surface.
3 In areas of high humidity the actuator should have
a packet of desiccant placed in the motor compart-
ment. (This will absorb excessive moisture)
On Site Storage
1 Actuators should be stored in a clean, dry location
free from excessive vibration and rapid temperature
change.
2 Ensure all actuator covers are in place and securely
fastened.
3 If power is not available, place a packet of desic-
cant in the motor compartment. (Replace cover and
securely fasten)
4 Replace plastic conduit plugs with appropriate pipe
plugs.
IMpORTANT
* Failure to follow proper storage guidelines will void
warranty.
1.3 DO
CAUTION: Shut off incoming power before
installing or repairing any electrical device.
1 Keep motor compartment clean and dry.
2 When applicable connect the compartment heater.
3 Check unit wiring and ensure it coincides with the
proper wiring diagram.
4 Power supply should be free from excessive voltage
transients (spikes) and properly connected to earth.
5 Control lines should be shielded properly.
6 Check motor nameplate to be certain that the actua-
tor voltage is the same as your incoming voltage.
7 Schedule a periodic maintenance check of all
EL-O-MATIC™ actuators to prolong life and ensure
proper performance (we suggest check for correct
opening and closing once a month).
8 Set open and close limit switches manually, in ac-
cordance with instructions.
DOC.ATX.EL.1 Rev.: C
February 2012