haas tm-1

[gcasper]

How many amps can I expect to draw on a tm-1 on single phase power cutting plastic?

[Donkey Hotey]

It depends on single or three phase connection. If you're trying to estimate power usage ($$$), that's tough. If you're trying to estimate wire size, I'd stick to the maximum sizes recommended.

The place where most of us see problems is during spindle startup. After a toolchange, the machine typically will spool up the spindle and at the same time, rapid to the next position. If you have coolant, that too will start at that instant. The combination of three axis servos, the spindle and the coolant pump all firing at the same time can cause low voltage alarms or blow circuit breakers if anything is undersized.

[Geof]

Originally Posted by gcasper How many amps can I expect to draw on a tm-1 on single phase power cutting plastic?

The spec plate on the back gives 40 amp as the maximum draw when using single phase power. That is the breaker size you should nuse and your wire should be sized for this current.

When running taking a cut you will never come near this current draw, as Donkey Hotey mentions maximum current draw occurs during spindle start up combined with a rapid move and it may spike up to 50 amps very briefly.

At 100% spindle load the current draw will be around 30 amps but it would be surprising if you ever loaded the spindle this high on plastics.

If you run into problems with low voltage alarms or a breaker tripping there are two Parameters you can change:

Parameter 196 ACCEL LIMIT LOAD is factory set at 195 and you can reduce it to whatever you want.

Parameter 209 COMMON SWITCH 2 has two columns of entries and near the bottom of the right column is one called SPNDL NOWAIT. When this is 1 if the command line following an M03 is a rapid move the machine will rapid while the spindle is accelerating, when it is 0 the machine waits until the spindle comes up to speed before doing the rapid.

[gcasper]

I have a shop at home and am running five 3hp knee mills on a 20 amp breaker with a static phase convertor. Haas recommends a 50 amp breaker for single phase on the tm-1.I only have 60 amps coming in.

[HelicopterJohn]

Hi Casper,

Here is the link to the HAAS Website. You are correct. They do recommend a 50 amp breaker for the TM-1 running on single phase.

http://www.haascnc.com/VMC_specs.asp...9#VMCTreeModel

You say you have (5) 3hp knee mills hooked up to a three phase convertor. How many of them do you run at a time?

I would think you would be O.K. with the TM-1 on a 50 amp breaker as long as you didn't turn on any of your large machines while it was running.

Just my thoughts. You should really check with a local electrician.

John

[pit202]

On my TM is : Full load 13amps, largest load 16amps - I know , we in europe have higher voltage
Sl-20B : Full load 40amps Largest load 70amps ;-/