Yaskawa iQpump Controller User Manual - Manual (Page 119)

Pump Tuning
YASKAWA TM.iQp.06 iQpump Controller User Manual 119
◆ L6 Torque Detection
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L6-01 Torque Detection Selection 1
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L6-02 Torque Detection Level 1
Setting Range: 0 ~ 300 % of iQpump drive rated output current
Factory Default: 15 % of iQpump drive rated output current
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L6-03 Torque Detection Time 1
Setting Range: 0.0 ~ 10.0 s
Factory Default: 10.0 s
The iQpump drive can be programmed to indicate when either an overtorque or an undertorque conditions exist. A digital output must be
programmed for “Torque Detection,” (H2-01/H2-02 = “B: Trq Det 1 N.O.” or “17: Trq Det 1 N.C.). A warning of an overtorque
condition can indicate a jam and an undertorque condition can indicate a broken belt, no water in a pump, or other loss of load.
To configure Torque Detection requires the following decisions:
1. Do you wish to check for an overtorque condition or an undertorque condition?
2. Do you wish to check for the torque condition whenever the iQpump drive is running or only at speed agree? Nuisance detection
during acceleration, when variable torques are normally required, can be avoided.
3. Do you want the iQpump drive to fault if the torque condition is detected or only alarm and continue operation?
The following table can help choose the proper setting for Torque Detection Selection 1 to get the wanted results.
Table 5.5 L6-01 Setting Choices
After selecting the proper detection scheme the Torque Detection Level (L6-02) must be specified. If the current level read by the output
current transformers rises above (overtorque) or drops below (undertorque) this level, and remains there for at least the Torque Detection
Time (L6-03), then the Torque Detection Function will change the state of any digital output configured for Torque Detection (H2-01 /
H2-02 = “B: Trq Det 1 N.O.,” or “17: Trq Det 1 N.C.”).
Setting Description
0 Disabled (factory default)
1 OL@SpdAgree - Alm
2 OL At Run -Alm
3 OL@SpdAgree - Flt
4 OL At Run - Flt
5 UL@SpdAgree - Alm
6 UL at Run - Alm
7 UL@SpdAgree - Flt
8 UL At Run - Flt
L6-01
Setting
Overtorque Undertorque Fault Alarm Always Detected
Only Detected @
Spd Agree
0 Torque Detection Disabled
1 X X X
2 X X X
3 X X X
4 X X X
5* X X X
6 X X X
7 X X
8 X X
*Suggested settings for Loss of Load indication