Good morning, we have had a problem with an XC44 expansion module, when we connect more than 5 solenoid valves to the DOUT-(HS) outputs, during the initialisation process, the module is protected and goes into state: SSP (Safe Shutdown Path) with the blink code: R4:2 1:1:1.

The electrical installation has been checked several times and everything is OK and all the clamp diodes are installed properly.

If we start with the solenoids disconnected and when the initialisation process has passed we connect them, everything works correctly.

We have tried to replace the module and it didn't work either.

We have finally had to add several relays to control the solenoids so that the module starts correctly, but this solution involves a lot of tedious extra work.

I have a system that uses an MD4 and some XC21 expansion modules. I am receiving an error code on the MD4 stating there is a VREF error A on XC21[0].

Currently our system uses the XC21 as digital inputs. We have a system power supply that supplies 24Vdc to a switch and then the digital input goes to the other side of the switch. This system has been running fine for multiple years, but now we have the Vref error. 

Since I am not actually using the Vref + at all, I know it isn't overloading. That seems to be the most common answer, as the XC21 Vrefs can only output 70 mA. Is the error bring prompted because something internally is damaged and needs to be replaced? 

Her is a picture of our wiring. C5 and C7 are the Vref A + signal, which aren't wired. C2, C4, C6, and C8 are all digital inputs from our system, all being 24Vdc. The system 24VDC is also powering the MD4 and XC21 so there isn't a concern about different power sources. 

Any thoughts?

How do I upgrade the firmware for my xc42?

Hello,

This is a small but frustrating nitpick.

The XC4x C1 Prototyping Harness (Parker no. 20085116) comes with wires installed in the C1:4 and C1:20 position.

This is annoying, because in order to use these modules, you need to install the ID Tag. (Parker no. 20085131 for example)

So every time you use this (expensive) part, you need to de-pin these two wires, remove them from the harness, and install the ID Tag.

Ideally there would be no wires present in these slots.

Like the older style XA2 Prototyping Harness (Parker no. 5030030).

Regards,

When connecting loads to high side digital outputs in parallel, the manual says on page 96 "Increased drive capability
Power driver high-side is connected in parallel with adjacent output to drive double
load current." On page 116 it states the max load per output is 4 amps and max load per group is 6 amps. So when you connect in parallel is the max load 8 amps? Or 6 amps?

Hello, I am working with an XC43 current output that controls a bidirectional valve and want to make sure I use the right resistor to avoid problems with getting short and open load errors. I have found the minimum resistance for my case is 20ohms based on Appendix A in Parker's Family instruction book, but I am not sure how to find the maximum. Any help would be appreciated.   

Hello, I have a current leakage problem in the XC-43 and XC-44 modules.

I am using Digital Out HS outputs to drive LED blinkers, but they don't turn off completely, there is a 5.8V voltage leakage. The flywheel diode is installed but we have had to install some power resistors in parallel to get them to switch off completely. The same problem has appeared when connecting a buzzer to Digital Out HS.

hello, 

i am this XA2 error in one of our 7ech forklifts, the machine is fully operational, but this error keeps on popping up ‘VREF error Value 4.98v’ can anyone explain why?

Hello,

I encountered a strange problem with XA2 module.

For some reason the VREF voltage fluctuate between 5 to 5,5Volts and due to that all the VIN-channels turns on simultaneously around 0 to 30% and the crane moves without touching levers. 

Replacing XA2 module didn't solve the problem.

Is it possible that there could be some grounding issues in VREF circuit or has the MD3 display unit any affect on XA2 VREF circuit?

- Markus

Hello,

We have a customer with this error pattern in one of the XC42 installed in the machine: R4:3 3:1:6

But we can’t find this pattern in the manual.

Can you explain what this blink code means, please?

Best regards 

Adolfo