MetCam Technical Manual
Document P/N A1604870010
13
4.4
Power Up
When power is applied to MetCam, the Power LED will start blinking Green. This is an indication that the power has been
connected properly and is within the allowed range. If the LED does not turn blinking Green there is a problem with the
power connection.
Wait approximately 60 seconds for MetCam to complete its boot procedure
The LED will change from blinking green to a constant green.
The 4-20 mA output provides 2.4 mA (Warmup state)
The 4-20 mA output changes to 4 mA after warmup is completed (typically 30 minutes)
The following figure shows the location of the Indicator LED (the green arrow is pointing to it)
4.5
4-20 mA Signaling and LED Status
MetCam uses a stepped output and needs to be installed as a 4 wire transmitter.
The signaling range is 3.8 to 20.5 mA. The signaling includes the following discrete level signals:
Normal - 4 mA
Alarm (A1)
– 16 mA
Alarm (A2)
– 20 mA
There is no alarm latching in MetCam.
The 4-20 mA outputs 0 mA when there is no power or a broken 4-20 mA line.
The MetCam LED is indicative of the health status of the unit.
The 4 LED cases are:
LED Color
On
Blinking
Green LED
"PWR"
"BOOT"
Red LED
"ERR"
"CHK"
Legend:
Indication
Meaning
PWR
MetCam is powered and functioning normally
BOOT
MetCam is booting, during boot the unit is non-functional
ERR
MetCam is in fault
CHK
MetCam has a fault that originates in the installation, check the external conditions
