7 Troubleshooting
Unsafe practices and other important information are emphasized in this manual.
Warnings are emphasized by means of special signs. All warnings in the manual are summarized on this page.
Pay special attention to the instructions below so that severe personal injury or damage to the top unit are avoided.
7.1
Troubleshooting and LEDs
Below is stated the meaning of the LEDs’ indications for fault finding in connection with the operation of the ThinkTop.
7.1.1 status LED (Red)
Red flashing:
Unit in set-up mode or internal software fault. If internal software fault, re-programme unit.
Red
Red steady:
Unit in set-up mode or internal hardware fault. If internal hardware fault, check if magnet is
in range and check correct wiring.
Red steady:
No. communication between ThinkTop and the DeviceNet master, i.e. the bus is offline. If
the Red LED is with random intervals and duration, it suggests that the bus is unstable,
and the DeviceNet network should then be investigated. There are numerous issues
that could lead to marginal operation of a network, bus load, voltage limits, impedance,
termination, etc.
7.1.2 Maintenance time out
Yellow B
1.Orange flashing: Time for maintenance has run out. The unit has been self-adjusted into a maintenance
alert condition. Valve maintenance is strongly recommended. After maintenance: Disabling
of maintenance/self-adjustment function is required before setting new position, however,
it is strongly recommended to make a complete new set-up after valve maintenance.
Orange
Yellow A
2.Orange steady,
yellow flashing
(A and/or B):
The unit has been self-adjusted into a maintenance alarm condition and the feedback is
lost (a minimum of seal left). Valve maintenance is required. After maintenance: Disabling
of the self-adjustment function is required before setting new position, however, it is
strongly recommended to make a complete new set-up after valve maintenance.
NOTE!
The maintenance indicator lighting up, and an open or closed light flashing..... =
Note the following:
-
Self-adjustment programme is only valid for SRC/ARC valves, do not use the
programme for other valve types.
-
Use tolerance/valve type 1.
-
In conjunction with valve type change-over; 21, 22, 31 and 32, the open position
must be defined as the upper sensor position (when the indication pin is in the highest
position).
-
A loose top, indication pin or sensor system can also generate the alert/alarm condition.
-
Removing a ThinkTop with self-adjust activated, will immediately generate an alarm
condition! If the ThinkTop has to be removed, not because of a valve maintenance
issue, but for some other reasons, and you want to store the already adjusted data
- disable the self-adjust function before removing the ThinkTop and enable it again
once the ThinkTop is back on the actuator.
-
After valve maintenance a disabling of the self-adjustment function is required before
setting a new position, however, it is strongly recommended to make a complete new
set-up (disable all functions in step 2 valve type - and make a complete new set-up).
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