Emerson VSR Manuel D’Utilisation

¢ Danfoss (USCO / MKS), 11 - 2006

 

DKRCI.EI.HT0.A1.22 / 520H1639 

 

       11

There are a number of alarms which are excellent indicators of improper installation or
set-up:

No valve type selected

At start-up A1 and CA will be displayed

Controller fault

Internal fault inside electronics

Input error

Not applicable if ¡01 = 2 or ¡02 = 2
When ¡03 = 1 and AI > 22 mA
When ¡03 = 2 and AI > 22 mA or AI < 2 mA
When ¡03 = 3 and AI >12 V
When ¡03 = 4 and AI >12 V or AI < 1 V

Low voltage of fail safe supply

If 5 V d.c. < Fail safe supply 
< 18 V d.c.

Check Supply to ICAD

If supply voltage < 18 V d.c.

The ICM valve size was not selected in 
parameter 

.  See the programming 

section on page 9.

The ICAD was not mounted properly 
on the valve stem.  Solution:  Check to 
make sure that the ICAD was mounted 
evenly on the ICM valve
The ICAD is not receiving a proper 
input signal.  Solution:  Use the service 
parameters (

 for a mA input or 

 

for a voltage input) to check the input 
signal that the ICAD is receiving.

1.

2.

A power supply was installed in the 
4-20mA/0-20mA feedback loop.  
The ICAD motor actuator supplies 
the power for the 4-20mA/0-20mA 
feedback loop.  Solution:  Remove any 
power source that may be supplied to 
the feedback loop.  
Wiring problem.  Solution:  Check the 
service parameter 

 to see what the 

ICAD is outputting.  If this does not 
reveal anything, check the current 
output (yellow and blue wires in ICAD 
control cable) with an ammeter. 
The feedback output signal was turned 
off in parameter 

.  Solution:  Check 

to make sure the setting in parameter 

 is correct.

1.

2.

3.