charge pump on g540

[Dragonbitscnc]

I've Dubble checked all connections to be correct. but cannot get the charge pump to go from red to green when e-stop is triggered. with the charge pump on the G540 off it works just fine. Do I need the charge pump? I think to get it working must be in the settings.

CHARGE PUMP: The G540 is equipped with a charge pump (watchdog timer) that disables the drive without a 10 kHz signal on pin 16 of the DB25 port. You can enable this by reversing what was done in STEP 3 and making sure that your parallel port is set to EPP mode. To do this, go into BIOS and set your parallel port to either “EPP” or “Send/Receive”; most parallel cards are set to ECP or “Send Only” by default.

In the config wizard there is a formula under -advanced hardware-,-charge pump- to set the kHz. I don't understand the math to come up with 10 kHz

[Joey]

Can you post a fresh report?

Is the charge pump assigned on output 3?

Charge pump specifically needs to be assigned to output 3 in the wizard which is pin 16 on the DB 25

[Dragonbitscnc]

yes...in the output definitions assigned to OUT3 (pin 16 B25)
input definitions, IN 8 e-stop NC, IN 5 drive ok NC (pin 15 DB25)
I think I need to set the kHz for the charge pump, in the example 92=12.500Hz - so? __ =10,000Hz

[centroid467]

yes...in the output definitions assigned to OUT3 (pin 16 B25)
input definitions, IN 8 e-stop NC, IN 5 drive ok NC (pin 15 DB25)
I think I need to set the kHz for the charge pump, in the example 92=12.500Hz - so? __ =10,000Hz

Try 120 for the divider value.

[Dragonbitscnc]

Bingo... that worked red led switches to green when cnc 12 starts then back to red when cnc 12 shutdown

Thank You... Now onto RC Snubber's

[cnc king]

Ensure that the correct kHz value is enabled in the settings and set the parallel port to EPP mode to make the charge pump work properly.

[tblough]

Since there is no parallel port involved, it's going to be a little tough to set it to enhanced mode.