MGS-350 Manual
20
6509-9000 Rev 1
Item
Description
LEDs
LED 1 Green
Power Status
LED 2 Red
Software Check (2-second flash)
Relay 2 High-level alarm
LED 3 Yellow
Software Check (2-second flash)
Relay 1 Low-level alarm
CON1
Input supply voltage and consumption (see below).
Supply voltages to be either:
•
12 to 24 VAC or
•
12 to 30 VDC.
CAUTION:
An earth ground connection
must be made when using the vented
metal enclosure or Exd enclosure. The
safety of this equipment is dependent on
the integrity of the power supply and the
grounding of the MGS-350 enclosure.
CON2
Optional display connector
CON3
Analog Output
Pin 1:
0 V
Pin 2:
4-20 mA
Load resistance < 400
Ω
Pin 3:
0-10 V
Load resistance > 10 K
Ω
Pin 4:
0-5 V
Load resistance > 10 K
Ω
CON4
Daughter board plug-in connection (installed in factory)
CON5
RS-485 Interface for connection to controller.
Pin 1:
RS-485 “A”
Pin 2:
RS-485 “B”
Pin 3:
Common (shield)
For the communications cable, use a minimum 2
conductor with a common drain wire (screen). Set
address through address switches S2 and S3.
CON6
Relay 1 contacts (Low-level alarm, indicated by yellow
LED3)