Table of Contents
efesotomasyon.com - Control Techniques,emerson,saftronics -ac drive-servo motor
Torque Detection
The over/undertorque detection circuit will activate when the motor load
causes the motor current to go above or below torque detection level (n078)
respectively. When the over/undertorque condition is detected, alarm sig-
nals are sent to multi-function output terminals MA, MB and/or M1.
To output an over/undertorque detection signal, set multi-function contact
output selection n041 or n042 to "6" (N.O. contact) or "7" (N.C. contact).
Multi-function Contact
Output Signal
(Overtorque Detection Signal)
Terminal MA, MB, M1
* Release width (hysteresis) during overtorque detection is 5% of the inverter rated current level.
· Over/undertorque Detection Function Selection (n077, Torq Det Sel)
LED
LCD Setting
Setting
0
Disabled
1
OT/SpdAgree/Alm
2
OT/Run/Alm
3
OT/SpdAgree/Flt
4
OT/Run/Flt
5
UT/SpdAgree/Alm
6
UT/Run/Alm
7
UT/SpdAgree/Flt
8
UT/Run/Flt
Notes:
· To detect torque during acceleration or deceleration, select a setting that contains
"RUN".
· To continue operation after over/undertorque detection, select a setting that contains
"Alm". During detection, the digital operator displays "oL3" alarm (blinking).
· To stop the inverter after an over/undertorque detection fault, select a setting that
contains "Flt". During detection, the digital operator displays "oL3" fault.
FP5/GP5 User's Manual
Chapter 3 - Programming Features
Inverter Rated Current
Motor Current
n078
*
ON
n079
Figure 43 Torque Characteristics
Description
Detection disabled (factory default)
Overtorque detection begins at speed agree; continue running after
detection. (Alarm)
Overtorque detection at run; continue running after detection. (Alarm)
Overtorque detection begins at speed agree; coast to stop after detec-
tion. (Fault)
Overtorque detection at run; coasts to stop after detection. (Fault)
Undertorque detection begins at speed agree; continue running after
detection. (Alarm)
Undertorque detection at run; continue running after detection. (Alarm)
Undertorque detection begins at speed agree; coast to stop after
detection. (Fault)
Undertorque detection at run; coast to stop after detection. (Fault)
FP5/GP5 Operation
*
Time
ON
n079
73
Hide quick links:
Table of Contents
