Solcon MPS 3000, Руководство пользователя

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Unbalance Protection
Notes:
1. Select the required trip/alarm time on the vertical axis (at 10% unbalance).
2. Draw an horizontal line at the selected point (for example, 5 Sec.).
3. Select an unbalance point (for example 40%).
4. Draw a vertical line at the selected point (the two lines intersect).
5. Draw a parallel line to the diagonal lines at the intersection point.
6. Insert the value of the time at the intersection point (from 5) into parameter U/B LEVEL 2 MAX T
(for example 80 sec).
Undervoltage
Active only after the start signal. Fault occurs when the average of the three line to line voltages decreases
below "U/V Level", for more than "U/V Delay" setting. It is possible to connect single phase voltage to the line
voltage inputs (terminals 78, 79, 80) and link them together (see page 6 - Line Voltage).
Auto reset, when ENABLED, occurs when average line voltage increases above the U/V Setting value, or when
motor trips.
Note : If U/V fault is required even when motor is stopped, option 1 (U/V active in stop condition) should be
ordered. MPS3000-P detects Start / Run / Stop conditions according to the level of current. If, during normal
operation (mains is connected and motor is running), mains is disconnected and under voltage fault is required
use option 1.
Over Voltage Level 1 (O/V Level 1)
This is active only after the start signal. Fault occurs when the average of three line to line voltages increases
above "O/V Level 1" setting, for more than 1 second.
Auto reset, when Enabled, occurs when average line voltage decreases below "O/V Level 1" value, or when the
motor trips.
Over Voltage Level 2
This is active only after the start signal. Fault occurs when the average line to line voltage increases above
"Overvoltage Level 2" setting, for more than "O/V Level 2 Delay" setting.
Auto reset, when Enabled, occurs when average line voltage decreases to below O/V Level 2 value, or when
the motor trips.
Phase Loss
The MPS3000 calculates voltage unbalance according to the difference between maximum and minimum
values of the line to line voltages, related to the "Line Volts" setting. Fault occurs when the unbalance level
exceeds 20% for more than 2 seconds
Auto reset, when enabled, occurs when the actual Unbalance decreases below 20%.
Note: Set Trip and Alarm to DISABLE, if three phase voltage is not measured.
Phase Sequence
Always Active. Fault occurs when the phase sequence is reversed for more than 2 seconds.
Disable Phase Sequence both for Trip and for Alarm, if only a single phase is connected to the voltage input
terminals.
Auto reset, when Enabled, occurs when a correct phase sequence is detected.
Note: Set Trip and Alarm to DISABLE, if three phase voltage is not measured.
Ground Fault Level 1 (GND Fault Level 1)
Fault occurs when Ground current exceeds "GND Fault Level 1" setting for more than the "G/F Level 1 Delay"
setting.
Auto reset, when Enabled, occurs when Ground current decreases below "GND Fault Level 1" setting. While
starting, G/F During Start setting parameter overrides G/F Level 1. Designed to eliminate nuisance alarming
during start process (with high currents) when residual "C/T" connection is used.