Analog Input Modules
Isolated Input Module IOP301
Metso Automation MAX Controls Inc.
•
277596
•
2-5
FLASH
FPGA
I/O Bus
Regulator
24V
5V - logic
uC
OPTO
optical isolation
field to logic
DC/DC
A/D 1
REF
A/D 8
REF
Channel 1
Channel 2
Channel 15
Channel 16
DC/DC
OPTO
Optical isolation
between each pair
of channels
Multiplexer
Multiplexer
Diagnostics
The module executes diagnostics on power up. When an error is detected on
power-up or during online operation, the front-panel green LED, labeled
Active, blinks the first digit at a slower rate and the second digit at a faster
rate. During normal operation the active LED is on continuously or flashes at
a steady one-second rate when the module is not being scanned. The
diagnostic codes are as follows:
Error Condition
Code
A/D send fault
0x12
A/D receive fault
0x13
A/D self calibration failure
0x14
Bad A/D communication
0x15
A/D does not complete conversion
0x16
RAM Test Failure (power-on)
0x22