Lamtec CMS, Manual

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64
4 CMS Components
NOTICE
It must be possible to measure a resistance of 120

between unconnected terminals. If the
measured value is greater than 120

and goes to infinity, a resistance has burned out. The
device must be replaced. If the measured value is 120

the error is outside the device in the
event of an error.
Using an analogue input as a digital input
The analogue inputs of the CMS (MCC or SAI) can be used as digital signals. To do so, the
IO configuration must be set as follows:
How to set the IO configuration to analogue-digital usage
1. In CMS Remote Software select: Menu CMS >> Configuration >> IO-Matrix
2. Set the analogue input at MCC or SAI to a digital signal
NOTICE
Failsafe digital signals may only be configured to failsafe analogue inputs!
NOTICE
For MCC: Only digital inputs that are not fail-safe may be configured to the analogue input of
the MCC.
3. Configure the hysteresis:
P 1260 … 1268 = SAI,
P 1269 = MCC analogue input 1
P 1326 = MCC analogue input 2
4. Configure the hysteresis:
Example: SAI 1 terminal X15/16 (failsafe input), upper threshold 10000 μ A, lower thresh-
old 4000 μ A P.1260.0 = 10000 << 16 | 4000 << 1 = 655368000
This means that from a value of 10,000 μ A on a logic 1 is detected and from a value of
4000 μ A a logic 0 is detected.
4.6.5 LEDs
LED Col-
our Explanation
PWR Gree
n LED is active as soon as the device is supplied with voltage.
Burner firing-rate In operation
ERR – ON: There is a fault
– Flashing at 2 Hz:
Device initialising – ON: There is a fault.
– OFF: No fault