Lauda IN 550 XT FC Operation Manual page 134

Code Message
7 No water
8 ---
9 T ext Pt100
10 T ext analog
11 T ext serial
12 Analog input 1
13 Analog input 2
14 High level
15 Digital input
16 Refilling
19 Gage pressure
20 T ext Ethernet
Communication inter-
22
rupted
23 T ext EtherCAT
24 Overtemperature
Table 40: Flow Controller Alarms
Code Message
55 Flow meter timeout
134 / 171
Description
No cooling water connected
---
No actual value from the Pt100
module
No actual value from the analog inter-
face
No actual value from the serial inter-
face
Analog module: Current interface 1,
interruption.
Analog module: Current interface 2,
interruption.
Float detects high level
Interference signal at the input of the
contact module
Heat transfer liquid level is too low
Gage pressure in the outflow
No actual value from the Ethernet
interface
Connection to the control station
interrupted
No actual value from the EtherCAT
interface
Overtemperature in expansion vessel
(T > TmaxTank)
Overtemperature in devices with pres-
sure overlay (T > Tmax_Return)
Description
Error in the LiBus cable connection
Integral process thermostats with flow control unit
User action
Provide a supply of cooling water
---
Check the temperature probe
Check the temperature probe
Check the serial connection
Check the connection
Check the connection
Drain excess heat transfer liquid from
the device. Caution: risk of burns
(customer application)
Refilling the heat transfer liquid
Reduce/eliminate the hydraulic resist-
ance in the hoses or/and in the con-
sumer
Check the serial connection
Check whether the control station
specifies the actual temperature via
the Ethernet interface
Check the cable connection
Check the serial connection
Allow the device to cool down
User action
Switch off the constant tem-
n
perature equipment
Check the LiBus cable connection
n
and restore if necessary
Switching the constant tem-
n
perature equipment on
V4