Functionality
72 USER MANUAL FPC 200 - 3/2017
Machine control
2.6.4.1 Description
Machine control is a control function which includes
basic parameters of rotating machine used for
calculation of rotation status and operating time of
machine.
MC-Machine control
Service factor:
ON
1,15In
Stall current:
4,00In
COUNTERS
Running hours:
Running minutes:
4442
51
Figure 2.46 Wiring scheme of voltage measurement
transformers.
2.6.4.2 Operation
Machine control constantly calculates rotation status of
machine. The function distinguish between six different
states of rotating machine:
Stopped
Starting
Normal operation
Overload
Re-acceleration
Stalling
Functions as Starts per hour [2.5.5] and Locked rotor
[2.5.4] than uses information about rotation status to
ensure correct function operation.
2.6.4.3 Status detection
2.6.4.3.1 Stopped
Rotational machine is considered stopped when all of
the currents are below 5 % of I
n_obj
for at least brief
amount of time.
2.6.4.3.2 Starting
State can be active if previous state was stopped and at
least one of the phase currents exceeds Service factor
level of I
n
.
2.6.4.3.3 Normal operation
State is active if all of the currents are below Service
factor and above 5 % of I
n
.
2.6.4.3.4 Overload
Overload state is considered if previous state was
normal operation and one of phase currents exceeds
Service factor level of I
n
.
2.6.4.3.5 Re - acceleration
Re-acceleration is considered if previous state was
Normal operation or Overload and one of phase
currents exceeds Service factor level of I
n
, while re-
acceleration digital input is active.
2.6.4.3.6 Stalling
Stall state is considered if previous state was Overload
and one of phase currents exceeds Stall current level of
I
n
.
2.6.4.4 Accessibility
Current status of rotating machine can be accessed
using LEDs, Digital relay outputs, communication, pc
software MiQen and it can also be accessed via
diagnostic on HMI:
Machine control
Status:
Running
Running Time:
204h 57min
Figure 2.47 Diagnostic screen of rotating machine.
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