Technical Data; Motor Load Jam Protection Jamptoc; Identification; Function Block - ABB RELION REX640 Technical Manual

1MRS759142 C
4.1.5.10
4.1.6
4.1.6.1
4.1.6.2
4.1.6.3
4.1.6.4
REX640
Technical Manual

Technical data

Table 416: T2PTTR Technical data
Characteristic
Operation accuracy
1)
Operate time accuracy
1) Overload current > 1.2 x Operate level temperature

Motor load jam protection JAMPTOC

Identification

Function description
Motor load jam protection

Function block

GUID-5EEB847C-34E3-4126-9985-97B54214A7D6 V1 EN
Figure 206: Function block

Functionality

The motor load jam protection function JAMPTOC is used for protecting the motor in
stall or mechanical jam situations during the running state.
When the motor is started, a separate function is used for the startup protection, and
JAMPTOC is normally blocked during the startup period. When the motor has passed
the starting phase, JAMPTOC monitors the magnitude of phase currents. The function
starts when the measured current exceeds the breakdown torque level, that is, above
the set limit. The operation characteristic is definite time.
The function contains a blocking functionality. It is possible to block the function
outputs.

Analog channel configuration

JAMPTOC has one analog group input which must be properly configured.
Protection functions
Value
Depending on the frequency of the measured
current: f ±2 Hz
n
Current measurement: ±1.5% of the set value or
±0.002 x I (at currents in the range of 0.01...4.00
n
x I )
n
±2.0% of the theoretical value or ±0.50 s
IEC 61850 IEC 60617
identification identification
JAMPTOC Ist>
Section 4
ANSI/IEEE C37.2
device number
50TDJAM
375