George M. Perzel
01-24-2019, 9:46 AM
Hi Guys;
I am having a problem with the Shenhui laser- twin 80 watt tubes.
Tube 1 laser power is on continuously, when the Laser switch is on -even when the control swutch is off.
I thought the laser power supply needed an input from the control card in order to fire.
A bit of history
I replaced one of the tubes with a new EFR ZS tube and a new EFR power supply. Input wires to new supply
needed to be changed a bit as plug assignments slightly different.
New tube and power supply work fine
Old tube now fires contantly when Laser power switch is turned- even with control switch off. I'm thinking that
problem may be with control card as signal to turn laser on comes from control card.
A side note: CAUTION: On Shenhui machines, 220VAC is live at HV power supplies even with all switches off
Anyone have an idea what's going on??
Thanks
Best regards
GM Perzel
Laserarts
I am having a problem with the Shenhui laser- twin 80 watt tubes.
Tube 1 laser power is on continuously, when the Laser switch is on -even when the control swutch is off.
I thought the laser power supply needed an input from the control card in order to fire.
A bit of history
I replaced one of the tubes with a new EFR ZS tube and a new EFR power supply. Input wires to new supply
needed to be changed a bit as plug assignments slightly different.
New tube and power supply work fine
Old tube now fires contantly when Laser power switch is turned- even with control switch off. I'm thinking that
problem may be with control card as signal to turn laser on comes from control card.
A side note: CAUTION: On Shenhui machines, 220VAC is live at HV power supplies even with all switches off
Anyone have an idea what's going on??
Thanks
Best regards
GM Perzel
Laserarts