Connecting To Power Supply; Preparing The Connection - AEC SM720 Operation Instructions Manual

Alex Electronics Co.
Safety Instructions
Electronic Module
Two-Wires connection card

4 Connecting to Power Supply

4.1

Preparing the Connection

Always keep in mind the following safety instructions:
• Please disconnect supply from power lines before beginning
the connection steps, for your safety and the safety of the
equipment.
• Choose the suitable cable diameter for the cable gland on your
equipment and tighten the cable gland to protect the sensor
from water and humidity.
• In case of high electromagnetic noise expected at the field
of operation, it is recommended to use a shielded cable and
connect the shield to earth terminal.
10
In case of the two wires system, connect the two power lines to
the card as shown in previous figure taking into consideration the
line polarity.
SM720 Capacitive Level Transmitter
AEC
Alex Electronics Co.
IE7XX
- +
9 8 7
Fig.6: Electronic Module
. 1 Power LED
. 2 Control LED
. 3 20mA fine adjust
. 4 Span circle
. 5 4mA fine adjust
. 6 Zero circle
. 7 Supply +ve terminal
. 8 Supply –ve terminal
. 9 Earth terminal
10 Magnetic Pen .
1
LD1
2
LD2
3
Span
4
Zero
5
6
10