Time optimization through contactor monitoring
With monitoring of contactors activated (Monitors/CO activated) and monitor contacts connected the
time T_0 is optimised. As soon as the contactors are closed, the time T_0 is interrupted and the time
T_1 started.
Time optimization through brake monitoring
If the brake monitoring is activated (
Monitoring/BR
≠
ON
) and the monitoring contacts are connected,
the time T_2 is optimized. As soon as the brakes are opened, time T_2 is aborted and time T_3
started.
11.3.1
Damping the start-up jerk
Applies to all start-up variations!
To reduce a startup jolt, you can accelerate to speed V_T3 linearly whilst T_3 is running. This
overcomes the static friction and reduces the startup jolt (see diagram).
11.3.2
Start-up variations
Information
The optimal start-up variations are preset based on the motor type selection in the
Motor name plate
menu.
Synchronous motors: MOD5
Asynchronous motors: MOD1
Additional start-up variations are only required in special cases.
The various start-up variations can be con
fi
gured in the
Start/M_Star
menu. The speed control
ampli
fi
cation K_START is con
fi
gured in the
Start/K_START
menu.
Start-up
|
-
"
M_START 1
|
-
"
3
Start control proce-
dure
Start-up
|
-
"
K_START 1
|
-
"
3
Start gain
MOD1 (standard setting for asynchronous motors)
The machine is speed controlled. Up to expiration of T_2, the speed is controlled at target value = 0. A
shaft position change is not corrected. The parameter "K_start" is used to increase the speed control
ampli
fi
cation. It is activated with the start of T_1 and deactivated with the expiration of T_2.
MOD2
Corresponds to the function of MOD1. In addition, the parameter "s_start" is activated. If the position of
the machine changes during time T_2 by the value entered in "s_start", "K_start" is switched off. That
prevents the machine from being damaged due to too high a value of "K_start".
MOD3
The machine is both position and speed controlled. Please note that both controls are set through
"K_start" and are thus dependent on each other. The position and speed control is activated with the
start of T_1 and deactivated with the expiration of T_2.
MOD5 (standard setting for synchronous motors)
The machine is position controlled. The machine position is recorded until expiration of T_2 and is
corrected if it changes. The parameter "K_start" is used to increase the position control ampli
fi
cation. It
is activated with the start of T_1 and deactivated with the expiration of T_2
MOD4
Corresponds to the function of MOD5. In addition, the parameter "s_start" is activated. If the position of
the machine changes during time T_2 by the value entered in "s_start", "K_start" is switched off. That
prevents the machine from being damaged due to too high a value of "K_start".
Original operating instructions
ZETADYN 3C
Travel options
R-TBA08_03-GB 1619
Part.-No. 00163322-GB
109/204
