Watson-Marlow MC100 - Manual (Page 34)

Users Manual
MC100
MC100 Users Manual Profibus DP - rev 4 Rev. 4 Page 34 of 40
9 Trouble shooting
9.1 Trouble-shooting
Different kind of problems can cause machine stop, errors etc. Most trouble-shooting will be based on
the information from the front plate indicators and display and the Alarm list information (see 8.1.1)
Examples:
Problem:
Display is flashing AL / 01 when applying power to the module, indication that the MC100
cannot find any pumps connected.
Solution:
First check if power is applied to the pump(s) and they are ON, then check cabling and
connectors for faults.
To check if problem has been solved, it’s necessary to turn power OFF and ON again
Problem:
Display is flashing AL / 03 when applying power to the module.
Solution:
First check if all the pump(s) has power applied and are indicating power ON.
If this is OK, then the MC100 has stored a different configuration and must be
reconfigured using the factory default configuration.
Make a factory reset to default by following the steps below:
1. Locate the dipswitches on the right side of the cabinet, turn dipswitch 8 ON.
2. Turn power ON to the module, which now starts up with the Alarm, but shortly after
starts the reset sequence and starts up again without the alarm 03.
3. Turn power OFF and turn dipswitch 8 back to OFF.
4. Turn power ON again and confirm that the alarm is still removed.
Alternative:
Use the Node address switch to do a factory reset. see section 5.1
Problem:
Display is shoving “S.2.”. As a follow up on the configuration problem above, this will be
the display, when the master/scanner has a different configuration of the number of cyclic
bytes.
Solution:
1. If this is the initial configuration, please use section 6. Configuring the fieldbus
network to the MC100 and the supplied documentation and files on the CD-rom to
setup the network.
2. If this situation occurs after the system has been running normally, but after a factory
reset, focus must be moved to the pumps, where probably one or more pumps is not
communicating on the FlexNet.
Use the description in 6.1 Connecting the MC100 and the pumps for the first time,
to control the number of pumps that are detected on the FlexNet. When the problem
is solved and the correct pumps corresponding to the correct configuration is verified,
it will be necessary to do a factory reset again.