Plug cover
Contact conduit
Switch compartment
cover
AUMA MATIC Ex
Name plate AUMA MATI
Ex
Name plate multi-turn actuator
Actuator
SA/ SAR
7. Electrical connection When working in potentially explosive areas, observe the
standard EN 60079-17 ”Inspection and Maintenance of
Electrical Installations in Hazardous Areas”.
Work on the electrical system or equipment must only be
carried out by a skilled electrician himself or
by specially instructed personnel under the control and
supervision of such an electrician and in accordance with
the applicable electrical engineering rules.
AUMA actuators SA(R)M Ex are operated by the electronic con-
trols AUMA MATIC Ex. These controls are mounted to the actua-
tor and form one unit together with the switch compartment of the
actuator. This unit is designed as a flameproof enclosure ”EEx d”
(see Techn. data, page 5).
The electrical connection to the power supply is made at a
plug/socket connector with terminal connection as standard. It is
designed for explosion protection ”EEx e” (increased safety) and
separated from the flameproof compartment by flameproof con-
tact conduits. A plug/socket connector is situated in the
flameproof compartment, which makes an easy separation from
the mains possible.
Before pulling the plug/socket connec-
tor, disconnect actuator from the mains.
.
Check whether type of current, supply voltage and
frequency correspond to motor data (refer to
name plate at motor and AUMA MATIC Ex).
.
Remove plug cover (figure G).
.
Insert cable glands with ”EEx e”-approval and of size
suitable for connecting cables.
.
Enclosure protection IP 67 or IP 68 is only ensured if
suitable cable glands are used.
Cross sections: control cables max. 1,5 mm2, power cables max. 6 mm2.
.
Remove cable sheating in a length of 120 - 140 mm.
.
Strip wires: controls max. 8 mm, motor max. 12 mm
.
For flexible cables use wire end sleeves according to DIN 46228
7.1 Wiring diagram
.
Connect cables according to order related wiring diagram MSP. . . KMS
TP . . .. The wiring diagram applicable to the actuator is attached to the
handwheel in a weather-proof bag, together with the operation
instructions. In case the wiring diagram is not available, it can be obtained
from AUMA (state commission no., refer to name plate) or downloaded
directly from the internet (see page 34).
Additional notes to the references mentioned in the wiring diagram,
e.g. >Information A< see clause 3, page 6
.
Heater for prevention of condensation is internally supplied, unless
ordered differently.
.
Only the same potential can be switched on the two circuits of the
switches. Different potentials require tandem switches.
Switches with gold plated contacts (option) may only be loaded with low
voltage (< 50 V DC / 400 mA).
.
For the connection of position transmitters (potentiometers, RWG)
screened cables must be used
7.2 Type of seating
.
The valve manufacturer specifies whether switching off in the end
positions should be by limit switch (limit seating) or torque switch (torque
seating). In case type of seating is to be changed, see programming
AUMA MATIC Ex, subclause 15.2, page 20.
.
Clean sealing faces at cover and check whether O-ring is o.k. Apply a thin
film of non-acidic grease (e.g. Vaseline) to the sealing faces.
10
Multi-turn actuators SAM Ex 07.1 - SAM Ex 16.1 / SARM Ex 07.1 - SARM Ex 16.1
AUMA MATIC Ex Operation instructions
Figure G
MOV
M
