TESTO 6681 Profibus User manual
testo 6681 Profibus · Humidity transmitte
r
with Profibus module
testo 6610 · Probes
P2A software · Parameterizing, adjusting and analyzing
software
Instruction manual Volume 1 en
Safety and the environment 3
Safety and the environment
Avoiding electrical hazards
Never use the instrument and connected probes to measure on or near live
parts!
Damaged mains cables must only be replaced by authorized personnel.
Only have the transmitter wired and connected by authorized personnel with
the voltage disconnected.
You must always comply with the regulations applicable in your country to the
opening and repair of electrical equipment.
Avoiding personal injury/damage to equipment
Installation, setting and calibration work must only be carried out by qualified
and authorized personnel!
Only open the instrument when this is expressly described in the instruction
manual for installation, maintenance or repair purposes.
Observe the permissible storage, transport and operating temperatures.
Never store or operate the product with solvents and do not use any
desiccants.
Do not use the instrument for control purposes at the same time as operating
or servicing the transmitter.
Only operate the product properly, for its intended purpose and within the
parameters specified in the technical data. Do not use force.
Carry out only the maintenance and repair work that is described in the
documentation. Follow the prescribed steps when doing so. Use only
OEM spare parts from Testo.
Any additional work must only be carried out by authorized personnel.
Otherwise Testo will not accept any responsibility for the proper functioning of
the instrument after repair and for the validity of certifications.
Protecting the environment
Send the product back to Testo at the end of its useful life. We will ensure
that it is disposed of in an environmentally friendly manner.
4 About this document
About this document
Please read this documentation through carefully and familiarize yourself with
the product before putting it to use. Keep this document to hand so that
you can refer to it when necessary. Hand this documentation on to any
subsequent users of the product.
The following conventions are followed in this document:
Character/
display:
Explanation/example
With the signal word Warning!:
Warns against hazards which could result in serious physical
injury if the precautionary measures indicated are not taken,
e.g.:
De-energize the mains connection before connecting the
transmitter!
With the signal word Caution!:
Warns against hazards which could result in minor physical
injury or damage to equipment if the precautionary
measures indicated are not taken, e.g.:
Observe the permissible operating temperature!
Important information, e.g.:
Administrator rights are required to install the program under
Windows®2000, XP and Vista.
Aim of action, e.g.:
Assembling the instrument at the process
connection:
Requirement that must be met, e.g.:
USB drivers are installed.
About this document 5
Character/
display:
Explanation/example
1 Steps are numbered if a certain sequence of actions must
be followed, e.g.:
1Loosen and remove housing screws.
2Remove the upper part of housing.
A step is not numbered if there are no further steps or if the
step is optional, e.g.:
Insert probe connector into socket of testo 6681 until it
engages.
" to " Example entries are in inverted commas, e.g.:
The value "0" results in ....
Bold type Elements of the program interface or instrument display,
e.g.:
The instrument designation appears in the
instrument/parameter file list.
Select Main Menu Channel 1 and confirm with SET.
…>… Functions/paths within a menu, e.g.:
Start > All Programmes > Testo > P2A Software.
[ ] Buttons which start an action, e.g.:
Confirm the software key with [OK].
CAPITAL
LETTERS Keys on the instrument or keypad, e.g.:
Press ESC.
6 Contents
Contents
1TRANSMITTER............................................................................................ 9
1.1 Specifications........................................................................................... 9
1.1.1 Functions and use ...................................................................... 9
1.1.2 Scope of delivery ........................................................................ 9
1.1.3 Accessories............................................................................... 10
1.1.4 Technical Data.......................................................................... 10
1.1.5 Dimensions ............................................................................... 12
1.2 Product description................................................................................ 13
1.2.1 At a glance................................................................................ 13
1.2.2 Usable probes........................................................................... 14
1.2.3 Display and keypad .................................................................. 15
1.2.4 Service interface ....................................................................... 15
1.2.5 Relay board (option) ................................................................. 15
1.2.6 Analog outputs.......................................................................... 16
1.2.7 Parameters ............................................................................... 16
1.2.8 Scaling ...................................................................................... 17
1.2.9 Alarm handling.......................................................................... 19
1.3 Commissioning ...................................................................................... 20
1.3.1 Insert Profibus module (Order no. 0554 6686)......................... 20
1.3.2 Assembling the instrument ....................................................... 22
1.3.3 Connecting the instrument........................................................ 25
1.3.4 Connect instrument to the bus system ..................................... 42
1.3.5 Configure Profibus module using EDD..................................... 49
1.3.6 Adjusting the instrument ........................................................... 55
1.4 Operation ............................................................................................... 66
1.4.1 Relationship between user menu and mini-DIN socket is
active......................................................................................... 66
1.4.2 Key cover .................................................................................. 67
1.4.3 Password protection ................................................................. 68
1.4.4 Structure of user menu ............................................................. 69
1.4.5 Overview of the testo 6681 user menu ........................................... 70
1.4.6 The individual main menus ....................................................... 72
Contents 7
1.5 Status, warning and error messages..................................................... 84
1.5.1 Status messages ......................................................................84
1.5.2 Warning messages ...................................................................85
1.5.3 Transmitter error messages......................................................87
1.5.4 Status codes in cyclical service ................................................88
1.5.5 Handling alarm messages ........................................................88
1.5.6 Namur fault conditions ..............................................................90
1.6 Maintenance and cleaning..................................................................... 91
1.6.1 Maintaining the instrument........................................................91
1.6.2 Cleaning the instrument............................................................91
8 Certificate
testo 6681 Profibus - 1.1 Specifications 9
1 Transmitter
1.1 Specifications
1.1.1 Functions and use
The testo 6681 humidity transmitter with Profibus module is used in
conjunction with plug-in, adjusted probes from the testo 6610 range.
Please refer to volume 2, chapter 2, page 97 for information
about commissioning, operating and maintaining the
testo 6610 probe.
The testo 6681 humidity transmitter is suitable for the following applications
with Profibus networking, for example:
Process instrumentation
Clean rooms
Test benches
Drying processes
Production and storage air quality
Complex room climate applications.
1.1.2 Scope of delivery
The scope of delivery of the testo 6681 humidity transmitter includes the
following:
Key cover
Rear panel bracket
10 testo 6681 Profibus - 1.1 Specifications
1.1.3 Accessories
The following accessories are available for the testo 6681 humidity
transmitter:
Protection caps for probes
Mains unit
P2A software (parameterizing, adjusting and analyzing software)
Assembly accessories.
Information about accessories and their order numbers can
be found in volume 2, chapter 4.2, page 167 or on the
website at www.testo.com.
1.1.4 Technical Data
Parameters
Humidity (various variables and units)
Temperature (°C/°F)
Measuring range
Depends on probe
Accuracy
Depends on probe
Resolution
0.1 % RH or 0.1 °C/0.1 °F
Meas. cycle
1/s
Interface
Mini-DIN for P2A software
(parameterizing and adjusting
software) and handheld testo
400/650
Optional Profibus-DP module
Voltage supply
4-wire (separate signal and supply
lines):
20 - 30 V AC/DC,
300 mA power consumption
Maximum load
- 4-wire: 500 (power output)
Analogue output*
0 to 1 V ± 1.5 mV (4-wire) or
0 to 5 V ± 7.5 mV (4-wire) or
0 to 10 V ± 15 mV (4-wire) or
0 to 20 mA ± 0.03 mA (4-wire) or
4 to 20 mA ± 0.03 mA (4-wire)
Resolution of analog output
12 bit
Relay
4 relays, 250 V AC/DC, 3 A (optional)
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