Closed Loop Drives

We have various closed loop drive systems in stock. Ideal for positioning tasks, CNC and general drive purposes. Closed-loop drives have the special feature that the position of the motor shaft is measured by an encoder and reported back to the motor driver. The driver can then check whether the motor has executed the desired movement and adjusts during the movement. This avoids step losses and provides a high level of safety. 
We supply systems from Leadshine and JMC. 

Leadshine supplies separate systems, motor driver and motor. The advantage of these systems is that the electronics are well protected in the control cabinet and the motors are dust-tight and produce less heat due to the separation. For this they cost a little more, but are also more flexible in application, due to the programmability.
Leadshine offer 2 and 3 phase systems, the latter run directly on 230V mains voltage and do not require a power supply. They are available from 8 - 20Nm and thus drive even large machines. The 2-phase systems provide enough torque for small to medium sized machines with 3 - 8Nm and are usually operated with 48V. 

JMC supplies integrated motors, driver and motor form one unit. This saves costs, the motors are very cheap. The disadvantage of this solution is the higher waste heat and the lack of dust tightness. 
There are 2 systems: closed-loop stepper motors (iHSS) and servo motors (iHSV). The former are very easy to use, nothing needs to be set by software, you can start with them right after connection. The servo motors, like all servo motors, must first be set to the load via software. This can be a bit tedious and is not always easy. The adjustment is necessary to get a good step response, otherwise the drives can overshoot during braking, which can lead to cutter breakage and errors. Tuning is therefore important with servo motors.

What do I use now?
If you want to operate a CNC milling machine and do not need the last ounce of speed, it is better to use closed-loop stepper motors and connect them as directly as possible without a gear ratio. If you need very high speeds at the axes and want to drive highest accelerations, you need servo motors, but then you have to tune the motors.