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Error Possible cause Tests and / or remedial measures Equipment, spare parts, personnel
Display shows
measured values but
– value does not change
and / or
– instrument cannot be
operated
– Instrument or module not
properly installed in instrument
CPM 223: Reinstall module
CPM 253: Reinstall display module
Refer to assembly drawings in
chapters 8.2.1 and 8.3.1
– Impermissible operating system
state
Switch instrument off and back on Possible EMC problem: if problem
persists, call E+H Service to have
installation checked
Instrument gets hot – Incorrect voltage / too high Compare mains voltage and rating
of nameplate
– Power supply unit defective Replace power supply unit Can only be diagnosed by E+H
Service
Incorrect meas. pH /
mV and / or
temperature value
– Transmitter module defective
(module: MKP1), please perform
tests and take measures
according to chap. 7.1
Test measuring inputs:
– Connectc pH, Ref and PA
directly on instrument with wire
jumpers
= display pH 7
– Connect 100 Ω resistance to
terminals 11 / 12 + 13
= display 0 °C
If test fails: replace module (using
correct variant), refer to exploded
views in chap. 8.2.1 and 8.3.1
Current output,
incorrect current
– Not calibrated correctly Test with built-in current simulation,
connecting mA meter directly to
current output
If simulation value is incorrect:
recalibration at factory or new
LSCxx module required.
If simulation value is correct:
check current loop for load and
shunts.
– Load excessive
– Shunt / short-circuit to frame in
current loop
– Incorrect mode of operation Check whether 0–20 mA or 4–20
mA has been selected
No current output signal – Current output stage defective
(module: LSCH/LSCP)
Test with built-in current simulation,
connecting mA meter directly to
current output
If test fails:
Replace controller
(using correct variant)
Additional relays do not
work
– CPM 253: ribbon cable
Pos. 320 loose or defective
Make sure ribbon cable is properly
connected, replace cable if nec.
See Spare parts COM 253 F
Only 2 additional relays
can be used
– Relay module LSR1-2 with 2
relays installed
Convert to LSR1-4 with 4 relays Operator or E+H Service
Enhanced functions
(S package) not
available
– No or incorrect release code
used
If upgraded: verify that correct
serial number has been used to
order S package
Handled by E+H Sales
– Incorrect serial number of
instrument stored in LSCH/LSCP)
module
Check whether serial number on
nameplate matches serial number
of LSCH/LSCP (field S8).
Serial number of instrument is
required to enable S package.
Enhanced functions
(S package and / or
Chemoclean) are not
available after
replacement of
LSCH-/LSCP module
– Serial number entered for
replacement module LSCH or
LSCP at factory is 0000.
S package or Chemoclean has
not been enabled with release
codes.
For LSCH / LSCP with SNR 0000
an instrument serial number can
be entered once in fields E114 to
E116.
Next step is to enter release codes
for S package and/or Chemoclean.
A detailed description can be
found in chap. 8.3.5.
No HART or PROFIBUS
interface function
– Wrong controller HART: LSCH-H1 or -H2
PROFIBUS-PA/-DP: LSCP-PA/-DP
module, see field E112
Replace controller;
operator or E+H Service
– Wrong software SW version see field E111
– Bus problem Remove some instruments and
repeat testing
Contact E+H Service for support
PM253E08.CHP
Liquisys M CPM 223 / 253 Diagnosis and corrective maintenance
Endress+Hauser 67
- Endress Hauser 1
- Table of contents 3
- 1 General information 4
- 1.5 Product structure 5
- 2 Safety 6
- 2.5 Immunity to interference 7
- 2.6 Declaration of conformity 7
- 3 Installation 8
- 3.2 Dimensions 9
- 3.3 Mounting 10
- PM253E03.CHP 11
- 3.3.2 Mounting examples 12
- Endress+Hauser 11 13
- 3.4 Electrical connection 14
- 131094-4G 15
- Construction of special 16
- CPK1_12e.EPS 16
- Fig. 3.13 16
- • If the software setting 18
- Setpoint 19
- 4.3 Keys 20
- PM253ED4.CHP 21
- 4.5 Operating concept 22
- 4.5.2 Access codes 23
- 4.5.3 Menu structure 23
- • If a change is made but not 23
- • See the appendix of these 23
- 5 Instrument configuration 25
- RELAY2.CDR 26
- Oper.Mode 27
- Glass A5 28
- Fig. 5.4 29
- Alarm signalling and 29
- 28 Endress+Hauser 30
- PM253E5A.CHP 31
- Fig. 5.7 32
- User-defined current output 32
- Sel. Out2 33
- Tabelle (3) 34
- Table (3) 34
- 5.5 Monitoring functions 35
- Rel.Assg 36
- Curr.Assg 36
- CleanTrig 36
- 5.5.2 Check 37
- • Due to its semiconductor 37
- A.Thresh 38
- Err.Delay 38
- LowAlarm 38
- HighAlarm 39
- ProcMonit 39
- Tmax Low 39
- Tmax High 39
- GRENZ-E.CDR 40
- not allowed 41
- Pulse length modulation 42
- Pulse frequency modulation 42
- PM253E5B.CHP 43
- 5.6.4 ChemoClean function 44
- • Use relays 3 (water) and 44
- • When “Economy” is selected 44
- LC PV R2 45
- LC State 46
- 120 R239 48
- 0.3 R2310 48
- Clean = ChemoClean (5) 49
- Neutra controller (6) 49
- ChemoClean (5) 49
- Proc.Type 51
- 5.7 Service 52
- S.Default 53
- Contr E1 54
- SerNo E113 54
- LSG E114 54
- 5.10 Calibration 55
- the user is 55
- ≤ 0.05 and value 56
- 59.18 N2 59
- PV Offset 60
- 6 Interfaces 61
- Endress+Hauser 61 63
- 62 Endress+Hauser 64
- Endress+Hauser 63 65
- 64 Endress+Hauser 66
- Endress+Hauser 65 67
- 8.1 Diagnosis 68
- Endress+Hauser 67 69
- 223EXPHE.CDR 70
- 8.2.2 Disassembly of CPM 223 71
- 8.2.3 Assembly of CPM 223 71
- 8.2.4 Spare parts for CPM 223 72
- 253EXPHE.CDR 73
- 8.3.2 Disassembly of CPM 253 74
- 8.3.3 Assembly of CPM 253 74
- 8.3.4 Spare parts for CPM 253 75
- 8.4 Spare parts orders 76
- 8.6.1 pH/redox transmitter 77
- 8.6.2 pH/mV electrodes 77
- 8.6.3 Assembly 77
- 8.6.4 Liquid KCl supply 77
- 9 Accessories 79
- 10 Technical data 81
- 80 Endress+Hauser 82
- Endress+Hauser 81 83
- 11 Appendix 84
- Endress+Hauser 83 85
- 84 Endress+Hauser 86
- Endress+Hauser 85 87
- 12 Index 88
- PM253E12.CHP 89
- Declaration of contamination 91
- BA 194C/07/en/07.02 92
- Printed in Germany / CV5 / DT 92
Verwandte Produkte und Handbücher für Split-System-Klimaanlagen AUX E&H Series
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