Initial Startup - Sensor Electronics SEC3120 Instruction And Operation Manual

Field Wiring Port (2
x ¾NPT
Power
2x 4-20 mA
RS485 (MODBUS) A & B
Alarm and Fault Relays
Magnetic Switch (3)
Alarm LED
Green OK
Yellow Low Alarm
Orange Mid Alarm
Red High Alarm
Mounting holes
(2)

6. Initial Startup

When power is applied to the SEC3120, it enters its power up sequence (approximately sixty seconds),
followed by the sensor warm-up mode which can take between one and five minutes depending on the
sensor(s). At the end of the warm-up period with no faults present, the SEC3120 automatically enters the
normal operating mode.
If a fault is present after warm-up, the LCD and the Fault LED will indicate the fault. See your specific
sensor's manual for warm-up and fault current value meanings (less than 4 mA).
NOTE: If your SEC3120 unit is set to operate two sensors in the 'Identical' Role and they are not identical
in gas type, range or units, then the SEC3120 unit will display a fault and indicate that the Sensors Are Not
Identical, and the fault relay on the SEC3120 unit will be engaged.
Inital Power Up Screen Sequence of the SEC3120
SEC3120 TRANSMITTER
-STARTING UP FROM
BRWN
(SOFT RESET)
SEC3120 TRANSMITTER
VER X.YY.RRRR
08/10/2010
SEC3120 TRANSMITTER
VER X.YY.RRRR
-INIT ROM FROM RAM
SEC3120 TRANSMITTER
VER X.YY.RRRR
-BOOT SENSOR SYSTEM
Operator Manual
SEC3120 Digital Transmitter
)
Gas Sensor Port (1
SEC 3000 / 3300
SEC Millenium / Signature / 5000
'BRWN' – Brown Out Reset (or 'SOFT RESET' shown
on bottom line for a software reset)
'005' – Counts down to '000' second startup delay
005
'VER' refers to the Firmware version installed in the
005
display.
21:15:33
'INIT ROM FROM RAM' – permanent parameters
transferred from either 'ROM' to NVRAM or from
003
NVRAM to ROM, or 'ROM' and 'RAM' are 'IDENTICAL'.
'BOOT SENSOR SYSTEM' – Starting up sensor
controllers
Page 10 of 40
Sensor Electronics Corporation
Memory Data Card Slot
LCD Display:
Real Time Status
Gas Type
Gas Concentration
Fault Identification
Range
ID Number
Memory Card Status
Interactive Menus
Calibration
Relay Programming
ID & Zone Number
Fault LED
)
Green
x ¾NPT
Red Fault
OK
P/N 1580281
Rev 10, 20150707