Configuration
Entek IRD 6652 DSP Protection Monitor
37
You can also set an alarm on the difference between the reference vector and the current
vector. The alarm defines a circle with its radius equal to the amplitude of the alarm
setpoint. You choose the alarm setpoint with the ES ALM option on the ECCNTRY
submenu under the User menu. See “ECCNTRY submenu” on page 18 for details.
Note that if you set the reference vector amplitude to 0 (zero), then you can set the vector
amplitude alarm on the current vector itself. In the following, the current vector amplitude
exceeds the vector alarm.
In summary:
l
To set the reference vector and alarm setpoint, use the ECCNTRY submenu
(User menu
→
ECCNTRY) described on page 18.
l
To turn vector monitoring on, define the machine speed band for vector monitoring, and
activate the vector (eccentricity) Danger alarm relay. Use the ECCNTRY submenu
(Factory menu
→
RANGES
→
ECCNTRY) described on page 30.
l
Vector monitoring requires a 1x tachometer signal, and TACHO set to YES in the TX
OK submenu (Factory menu
→
TX OK) described on page 30.
R
Radius of circle is the
amplitude of the alarm. Circle
centered on the tip of the
reference vector
R
C
R
C
Current vector
outside of circle,
and in alarm
Current vector
in circle, not in
alarm
C
Reference vector amplitude set
to 0. The current vector is in
alarm
