Troubleshooting; Operation - OJ Electronics PTH-6201 Anleitung

TROUBLESHOOTING

Symptom
Green LED not lit
Yellow LED not lit
Negative measurement value
read out
Measurement deviation
Zero point deviation
Operating
humidity .......10%RH to 95%RH, non-condensing
Operating altitude .......................................≤2000m
Enclosure rating ................................................ IP54
Weight ............................................................. 110 g
*Note: MV = Measured Value / SR = Set meas-
uring range
**Note: Ambient temperature affects the LCD
display speed and contrast
***Note: DC Supply is recommended if the
operation temperature exceed 40°C

OPERATION

Status light in normal operation:
"Power ON" (green LED) lights up to indicate
that voltage is received from the Modbus cable.
Valid communication on Modbus is similarly
indicated by a 'Modbus Communications' (yel-
low LED) which flashes, the intensity of flashing
being dependent on communication intensity.
LED ON FLASHING
Valid Modbus
Top
communica-
(yellow)
tion
Bottom POWER
(green) ON
Modbus protocol
PTH-6201/6202/6502 has an address range of
16 and can be set to addresses between 0x50
(hex) (dec 80) and 0X5F (hex) (dec.95). The
communication protocol is: 38.4 kB, 1 start bit,
8 data bits, 1 stop bit and no parity.
The address can be set on the address switch
inside the PTH-6201/6202/6502.
6
Cause
No supply voltage
Defective PTH-6201/6202/6502
Modbus disconnected/short-
circuited
Incorrect address
Incorrect communication speed Set communication: 38.4
Defective PTH-6201/6202/6502
Tubes have been connected to
incorrect connectors.
Defective PTH-6201/6202/6502
PTH-6201/6202/6502 is located
at a point where the tempera-
ture is outside the specified
temperature range
No or reduced flow through
pressure measurement tubes
Zero pressure at measurement
points
Defective PTH-6201/6202/6502
Zero-calibration has not been
carried out
Defective PTH-6201/6202/6502
Modbus addresses
HexEncoder: ID
0-
1-
2-
3-
4-
5-
6-
7-
8-
9-
10-
11-
12-
13-
14-
15-
HOLDING:
Addr-0 (REG-1)
ExternCalibrate
OFF
Calibration Status (1 = Zero calibration)
Invalid Modbus
INPUT:
communication
Addr-0 (REG-1) SoftwareVer
Power OFF
Addr-1 (REG-2) Pressure
Addr-4 (REG-5) PressHiRes
Addr-5 (REG-6) PressAvrDyn
Addr-6 (REG-7) PressAvrAbs
Action
Check supply voltage
Check electrical connections
Check sockets
Replace PTH-6201/6202/6502
Check the electrical connec-
tions along the entire length of
the Modbus
Set correct Modbus address on
the address selector in PTH-
6201/6202/6502
kBaud, 1 start bit, 8 data bits, 1
stop bit, no parity
Replace PTH-6201/6202/6502
Switch the connection tubes
around on the plus (+) and
minus (-) connectors.
Replace PTH-6201/6202/6502
Adjust the ambient temperature
to the range specified in these
instructions
Check that the pressure meas-
urement tubes are correctly
fitted
Start the fan
Replace PTH-6201/6202/6502
Disconnect all sources of pres-
sure from PTH-6201/6202/6502
by removing both pressure
tubes and carry out a zero-
calibration.
Replace PTH-6201/6202/6502
0x59(89 dec)
0X56(86 dec)
0X50(80 dec)
0X51(81 dec)
0X57(87 dec)
0X52(82 dec)
0X58(88 dec)
0X55(85 dec)
0X53(83 dec)
0X54(84 dec)
0X5A(90 dec)
0X5B(91 dec)
0X5C(92 dec)
0X5D(93 dec)
0X5E(94 dec)
0X5F(95 dec)
Software
Version 1/100
Sensor pressure
in Pa
Sensor pressure
in 0,1 Pa
Dynamic
averaging of
PressHiRes
Dynamic av-
eraging of last
30 PressHiRes
measurements
© 2020 OJ Electronics A/S
SERVICE AND MAINTENANCE
PTH-6201/6202/6502 contains no components
which require service or maintenance.
Please contact your supplier if faults arise.
DISPOSAL AND ENVIRONMENTAL
PROTECTION
Help protect the environment by disposing of
the packaging and redundant products in a
responsible manner.
Product disposal
Products marked with this symbol
must not be disposed of along with
household refuse but must be
delivered to a waste collection centre
in accordance with current localregula-
tions.
Disclaimer
OJ cannot be held liable for any errors in cata-
logues, brochures or other printed material. OJ
reserves the right to alter its products without
notice. This also applies to products already
on order, provided that such alterations can be
made without requiring subsequent changes in
specifications already agreed. All trademarks in
this material are the property of the respective
companies. OJ and the OJ logotype are trade-
marks of OJ Electronics A/S. All rights reserved.
OJ ELECTRONICS A/S
Stenager 13B · DK-6400 Sønderborg
Tel. +45 73 12 13 14 · Fax +45 73 12 13 13
oj@ojelectronics.com · www.ojelectronics.com
CE MARKING
OJ Electronics A/S hereby declares that the
product is manufactured in accordance with
Council Directive 92/31/EEC on electromagnetic
compatibility (and subsequent amendments)
and Council Directive 73/23/EEC on electrical
equipment designed for use within certain volta-
ge limits (and subsequent amendments).
Applied standards
EMC emission EN 61000-6-3:2001
EMC immunity EN 61000-6-2:2001
Deutsch
ABBILDUNGEN
Folgende Abbildungen finden sich ganz hinten
in der Anleitung:
Abb. 1: Maßskizze
Abb. 2: Platzierung des Messumformers i. V. m.
Biegungen und Abzweigen
Abb. 3: Anschlussdiagramm, PTH-6202/6502
Abb. 4: Modbus-Anschlüsse
Abb. 5: Konfigurationsbeispiel
Abb. 6: Anschlussdiagramm, PTH-6201
ALLGEMEINES
PTH-6201/6202/6502 ist ein über RS485-RTU-
Modbus kommunizierender elektronischer
Druckmessumformer, der insbesondere für die
Differenzdruckmessung in Lüftungsanlagen
geeignet ist. Der Druckmessumformer kommt
in Zusammenhang mit der Überwachung,
Kontrolle und Regelung über einen elektroni-
schen Regler, z. B. in einer SPS-, BMS- oder
SCADA-Anlage, zum Einsatz. Alle Kommandos
und Daten zwischen PTH-6201/6202/6502
und der Regeleinheit werden digital per
RS485-RTU-Modbus-Protokoll gesandt. Mit
integrierter Modbus-Kommunikation ist PTH-
6201/6202/6502 dank reduzierter Installations-
kosten besonders für die Integration in SPS-,
BMS- und SCADA-Systemen geeignet.
Typische Anwendungsbereiche sind:
- Messung des Drucks an einer gegebenen
Stelle in einer Lüftungsanlage.
- Differenzdruckmessung über einem Lüftungs-
filter, zur Ermittlung des optimalen Zeitpunkts
für den Filteraustausch.