M-Maxâ„¢ Series Adjustable Frequency Drive - Eaton Corporation
M-Maxâ„¢ Series Adjustable Frequency Drive - Eaton Corporation
M-Maxâ„¢ Series Adjustable Frequency Drive - Eaton Corporation
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Parameters<br />
Protective Functions (P8)<br />
In parameter group P8, you can set the reaction of the frequency inverter to external<br />
influences and increase the protection to the drive system (PDS):<br />
● 0 = deactivated, no reaction<br />
● 1 = Alarm (for example, AL 50)<br />
● 2 = Fault (stop mode after error message based on parameters P6.8, for example, F…50)<br />
The (FAULT) and (ALARM) messages are described on Page 54.<br />
Protective Functions<br />
PNU ID<br />
Access<br />
RUN Value/Range Description<br />
P8.1 700 X — Analog minimum reference error (live-zero)<br />
Monitors the live zero of the analog inputs AI1 and AI2 if the<br />
parameters P2.1 and P2.5 are set to 1 (4 mA, 2V):<br />
AI1, control signal terminal 2, P2.1<br />
AI2, control signal terminal 4, P2.5<br />
A warning or error message (F… 50) is output if the signal drops<br />
below 3.0 mA or 1.5V for 5 seconds or 0.5 mA or 0.25V for<br />
0.5 seconds. This reaction time can be changed at P8.10<br />
1<br />
0 Deactivated<br />
1 Alarm (AL 50)<br />
Note: If the setpoint is restored ( 4 mA, 2V) the drive starts<br />
up automatically if there is no disconnection by the warning<br />
message<br />
2 Fault (F… 50), stop function according to P6.8<br />
P8.2 727 X — Undervoltage error<br />
Under-voltage error in the intermediate circuit because of a low<br />
input-side supply voltage, for example, by connecting 230V to a<br />
400V device or if a phase drops out<br />
2<br />
0 Deactivated<br />
1 Alarm (AL 09)<br />
Note: A start signal (START button, rising edge on the control<br />
terminals) must exist again for restarting<br />
2 Fault (F… 09), stop function according to P6.8<br />
P8.3 703 X — Ground fault<br />
The ground fault monitoring checks the currents in the motor<br />
phases and is continually active. It protects the frequency<br />
inverter from ground faults with high currents<br />
2<br />
0 Deactivated<br />
If the monitoring is deactivated, the reaction time is shortened<br />
to a start signal<br />
Caution: When the monitoring is deactivated, a ground fault<br />
can cause damage to the inverter<br />
1 Alarm (AL 03)<br />
2 Fault (F… 03), stop function according to P6.8<br />
88 M-Max <strong>Series</strong> <strong>Adjustable</strong> <strong>Frequency</strong> <strong>Drive</strong> MN04020003E—April 2011 www.eaton.com<br />
Factory Setting<br />
(P1.3)
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