Eaton M-Max series - Protective Functions

Parameters
90 M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.com
Protective Functions (P8)
In parameter group P8, you can set the reaction of the frequency inverter to external
influences and increase the protection to the drive system (PDS):
●
0 = deactivated, no reaction
●
1 = Alarm (for example, AL 50)
●
2 = Fault (stop mode after error message based on parameters P6.8, for example, F…50)
The (FAULT) and (ALARM) messages are described on Page 56.
Protective Functions
PNU ID
Access
RUN Value/Range Description
Factory Setting
(P1.3)
P8.1 700 X — Analog minimum reference error (live-zero) 1
Monitors the live zero of the analog inputs AI1 and AI2 if the
parameters P2.1 and P2.5 are set to 1 (4 mA, 2V):
AI1, control signal terminal 2, P2.1
AI2, control signal terminal 4, P2.5
A warning or error message (F… 50) is output if the signal drops
below 3.0 mA or 1.5V for 5 seconds or 0.5 mA or 0.25V for
0.5 seconds. This reaction time can be changed at P8.10
0 Deactivated
1 Alarm (AL 50)
Note: If the setpoint is restored ( 4 mA, 2V) the drive starts
up automatically if there is no disconnection by the warning
message
2 Fault (F… 50), stop function according to P6.8
P8.2 727 X — Undervoltage error 2
Under-voltage error in the intermediate circuit because of a low
input-side supply voltage, for example, by connecting 230V to a
400V device or if a phase drops out
0 Deactivated
1 Alarm (AL 09)
Note: A start signal (START button, rising edge on the control
terminals) must exist again for restarting
2 Fault (F… 09), stop function according to P6.8
P8.3 703 X — Ground fault 2
The ground fault monitoring checks the currents in the motor
phases and is continually active. It protects the frequency
inverter from ground faults with high currents
0 Deactivated
If the monitoring is deactivated, the reaction time is shortened
to a start signal
Caution: When the monitoring is deactivated, a ground fault
can cause damage to the inverter
1 Alarm (AL 03)
2 Fault (F… 03), stop function according to P6.8