Nordson TCB User Manual

Installation, Operation and Maintenance Manual
28
Symptom Possible cause Action
K Weak pulses. Air supply inadequate.
Check compressor capacity. Check pulse
interval – air pressure in manifold should
return to required value before next pulse.
Supply voltage too low.
Check supply voltage and connections to
Control box.
L
LED bar graph
pulsing
is below -20 daPa
Reverse pressure drop tubing connections
M E 01: Fan alarm
Lack of proper system flow or
open access to ambient
Close open hopper discharge or other
openings. Do not attempt to run without inlet
ducting attached.
System airflow exceeds the rated
flo
w
Adjust inlet or outlet damper(s)
Faulty motor Repair or replace as required.
Automatic circuit breaker is OK
but a missing connection
between terminal 33-34
Check and repair the connection
N
E 02: Communication
alarm
RS-485 bus link between system
components not functioning.
Check bus link wiring.
Slave modules not responding
Check mode and module switch settings on
slave modules.
O
E 05: Low pressure
alarm
Faulty parameter settings Check parameter settings (see chapter 7.5).
 problem
Refer to section I of Fault Location Table.
Fan motor fault Check operation of fan motor
Ducting restricted or blocked Check ducting system
Filter elements damaged
Check condition of all filter elements. If
necessary replace all filter elements at the
same time.
P
E 06: DeltaP max
alarm
Faulty parameter settings Check parameter settings (see chapter 7.4)
 problem
Refer to section I of Fault Location Table.
Low compressed air pressure
Check reverse-jet pulsing system. Increase
manifold pressure to 6
–
7 bar.
End of useful filter element life Replace filter elements as a complete set
Q E 07: Data alarm Data lost from memory Check all parameters and correct if necessary.
R
E 10: Low battery /
Check Time
Low battery for real-time clock /
incorrect clock settings
Check / Replace battery on front PCB module
(see picture in chapter 9). Correct type is
CR2032. Re-set time and date.
S
E 11: Negative
DeltaP measurement
Pneumatic tubing connections
incorrect
Reverse the pressure drop tubing connections.
If a safety filter (Micrafilter) is present it has to
be in the dirty air plenum tubing (both tubes for
explosive powder applications).
T
E13 : High DP after
ECB clean cycle
High DP on ECB unit after
cleaning
Refer to section P (E06 high DeltaP) above.

Nordson TCB Specifications

General

Brand	Nordson
Model	TCB
Category	Control Unit
Language	English