Zero Search Modes - JVL MIS17 Series User Manual

6.5
6.5.1 Mechanical zero search modes
In all positioning systems there is a requirement to be able to find a mechanical zero po-
sition after the system is powered up or at specific times during operation. For this pur-
pose the MIS motor offers 3 different Zero search modes which can be selected from
the MacTalk main window or by sending a command via one of the serial interfaces.
The menu offers 3 options:
Disabled (default)
Power up: Sensor type 1 The Zero search function will start seeking for Zero until an
Power up: Sensor type 2 Like above (Sensor type 1) but after the sensor is activated
Power up: Torque
The following sections explain in detail the functionality of the 3 fundamental Zero search
modes.
JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x

Zero search modes

The Zero search is disabled.
external sensor is activated. The point at which the sensor
is activated is defined as the zero.
the direction of movement is reversed and the point at
which the sensor is disabled is defined as zero.
Only available with H2/H4 encoder installed and with
Closed loop and Current control enabled. Please see "5.3
Closed loop". The Zero search will start searching for Zero
until a mechanical "collision" occurs. The point at which
the motor torque is equal to the specified value of the Zero
search torque is defined as the zero position.
Select the Zero search mode
using this field. The selected format will
be used as follows :
- Immediately after ther motor is powered up
(only the "Power up ...." Formats)
- If a search is initiated via the serial
interface.
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