[FONT="]Hello[/FONT][FONT=宋],[/FONT][FONT="]guys.[/FONT]
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[FONT="]We have one 840Dsl milling machine and there are B_11, [/FONT][FONT="]B12[/FONT][FONT="], B_13, [/FONT][FONT="]B14[/FONT][FONT="] planetary (fixtures) on it. They can rotate 360 degree and are independent. [/FONT]
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[FONT="]B_11 and B_13 use the same output to control their hydraulic breaks, [/FONT][FONT="]B12[/FONT][FONT="] and [/FONT][FONT="]B14[/FONT][FONT="] as well.[/FONT]
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[FONT="]Last week we got B_11 encoder fault, so techs replaced with a new rotary angle encoder ([/FONT][FONT="]HEIDENHAIN RCN 2380), as we could not find the same one. But after the installation, there were many encoder alarms. We have to change the old one back.[/FONT]
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[FONT="]Then techs replaced encoder cables, swapped motor modules……Now encoder alarms’ gone, but we get bigger issue: B_11 axis is out of control.[/FONT]
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[FONT="]Whatever in Auto or Jog mode, whatever the feedrate is 0% or 100%, as long as we try to drive B_11, it will spin with max speed until alarms show up.[/FONT]
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[FONT="]The more strange thing is: B_11 still rotated with max speed, even when we drove B_13. Anyway, B12 and B14 are functional.[/FONT]
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[FONT="]We swapped B_11 encoder cable and power cable with B_13 encoder and power cables on power module sides (B_11 and B12 use the same power module, B_13 and B14 as well). Then what, we can run them without any issue! ! ! Actually under this condition, when we drove B_11, B_13 was spinning physically. However, they were working.[/FONT]
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[FONT="]So we suspect something wrong over controller memory area (EPROM?), it looks like the controller can not send the signal to the right spot (address).[/FONT]
[FONT="]
[/FONT]
[FONT="]Could you give us a help. It’s a really really headache problem.[/FONT]
[FONT="]
[/FONT]
[FONT="]Thanks a lot. [/FONT]
Power Module B
202: B_13 encoder
203: B14 encoder
X1: B_13 power
X2: B14 power
Power Module A
202: B_11 encoder
203: B12 encoder
X1: B_11 power
X2: B12 power
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[/FONT]
[FONT="]We have one 840Dsl milling machine and there are B_11, [/FONT][FONT="]B12[/FONT][FONT="], B_13, [/FONT][FONT="]B14[/FONT][FONT="] planetary (fixtures) on it. They can rotate 360 degree and are independent. [/FONT]
[FONT="]
[/FONT]
[FONT="]B_11 and B_13 use the same output to control their hydraulic breaks, [/FONT][FONT="]B12[/FONT][FONT="] and [/FONT][FONT="]B14[/FONT][FONT="] as well.[/FONT]
[FONT="]
[/FONT]
[FONT="]Last week we got B_11 encoder fault, so techs replaced with a new rotary angle encoder ([/FONT][FONT="]HEIDENHAIN RCN 2380), as we could not find the same one. But after the installation, there were many encoder alarms. We have to change the old one back.[/FONT]
[FONT="]
[/FONT]
[FONT="]Then techs replaced encoder cables, swapped motor modules……Now encoder alarms’ gone, but we get bigger issue: B_11 axis is out of control.[/FONT]
[FONT="]
[/FONT]
[FONT="]Whatever in Auto or Jog mode, whatever the feedrate is 0% or 100%, as long as we try to drive B_11, it will spin with max speed until alarms show up.[/FONT]
[FONT="]
[/FONT]
[FONT="]The more strange thing is: B_11 still rotated with max speed, even when we drove B_13. Anyway, B12 and B14 are functional.[/FONT]
[FONT="]
[/FONT]
[FONT="]We swapped B_11 encoder cable and power cable with B_13 encoder and power cables on power module sides (B_11 and B12 use the same power module, B_13 and B14 as well). Then what, we can run them without any issue! ! ! Actually under this condition, when we drove B_11, B_13 was spinning physically. However, they were working.[/FONT]
[FONT="]
[/FONT]
[FONT="]So we suspect something wrong over controller memory area (EPROM?), it looks like the controller can not send the signal to the right spot (address).[/FONT]
[FONT="]
[/FONT]
[FONT="]Could you give us a help. It’s a really really headache problem.[/FONT]
[FONT="]
[/FONT]
[FONT="]Thanks a lot. [/FONT]
Power Module B
202: B_13 encoder
203: B14 encoder
X1: B_13 power
X2: B14 power
Power Module A
202: B_11 encoder
203: B12 encoder
X1: B_11 power
X2: B12 power
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