D020 I2T; D021 I2T Zero Hz; D022 I2T Cnr Hz - Zener MSC-3 Instruction Manual

D020 I2t

Range: 18...100% of the MSC-3 current rating (model dependant)
• Press  to edit the value.
• Press ▲/ ▼ to make changes to the value.
• Press  to accept the new value OR
• Press ESC to abandon the value change.
This sets the upper thermal overload limit in amps. An "I2t" trip is generated if the output current is
higher than this value for a sufficient amount of time depending on the overload class selected.

D021 I2t zero Hz

Range: 18...D020 I2t value
• Press  to edit the value.
• Press ▲/ ▼ to make changes to the value.
• Press  to accept the new value OR
• Press ESC to abandon the value change.
This sets the trip threshold when the speed is zero. This value cannot be set higher than the D020 I2t
value.

D022 I2t CNR Hz

Range: 2...200Hz
• Press  to edit the value.
• Press ▲/ ▼ to make changes to the value.
• Press  to accept the new value OR
• Press ESC to abandon the value change.
The D022 I2t cnr Hz value sets the frequency above which the profile uses the trip threshold as set by
D020 I2t. Below this frequency the I2t value is set by the slope on the I2t profile.
D020 I2t
40.0 Amps
D021 I2t zero Hz
40.0 Amps
D022 I2t CNR Hz
10 Hz
IM00120 IM00120
MSC-3 Instruction Manual
79