TESTO Alarm box User manual
Instruction manual en
Alarm box 0554 6722
for testo 6721 pressure dewpoint monitor
2
Safety and the environment
About this document
iPlease 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.
iPay particular attention to information emphasized by the following symbols:
· 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.
· Important.
Avoiding personal injury/damage to equipment
iNever store the product together with solvents and do not use any
dessicants.
iOnly operate the product properly, for its intended purpose and within the
parameters specified in the technical data. Do not use force.
iOnly carry out 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.
Protecting the environment
iSend 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.
Safety and the environment
3
Specifications
Functions and use
The alarm box (art. no. 0554 6722) is to be connected to the
testo 6721 pressure dewpoint monitor and enhances it with the functions:
- Display of the alarm statuses via two 2-colour LEDs:
no alarm/pre-alarm/alarm
LED LIMIT 2/alarm LIMIT 1
No alarm green green
Pre-alarm green red
Main alarm red red
- Integrated mains unit for supplying testo 6721 with 24 V DC
Technical data
Dimensions
Supply
· Mains voltage: 100...250 V AC 50/60 Hz
(long range)
· Nominal output 9 W
· testo 6721/22 supply voltage:
24 V DC, 150 mA
Other instrument data
· Housing: ABS grey 120x90x50 mm with
2 cable couplings M16x1.5
· 2 x LED 5 mm two-colour (red/green)
· Screw terminals, max 1.5 mm² wire range
· 8-wire line required for connection
(e.g. 0554 6720)
· Ambient temperature: 0...50°C/32...122°F
· Dimensions: 120 x 90 x 50 mm
· Weight: 225 g
Directives, standards and tests
· EC Directive: 89/336/EEC
Warranty
· Duration: 2 years
· Warranty conditions: warranty conditions: See web
page www.testo.com/warranty
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Specifications
4Commissioning
Commissioning
Electrical connection
Mains voltage connection:
100 - 250 V AC + PE
Connection for supply voltage to
testo 6721:
24 V DC 150 mA,
+ at contact 4 (red)
- at contact 8 (blue)
Functional earth to shield (black)
Connection for switch contacts of
testo 6721, see below for details
Pressure dewpoint monitor/ alarm box terminal assignment
Pressure dewpoint monitor Alarm box Colour
7 (Functional earth) black (shield)
5 (NC contact) NC2 green
6 (NO contact) NO2 white
9 (Root/pin) P2 brown
3 (NC contact) NC1 pink
2 (NO contact) NO1 yellow
1 (Root/pin) P1 grey
4 (Supply) + red
8 (Supply) - blue
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5Commissioning
Assembly and wiring
1Open left and right side covers .
2Loosen the 4 screws .
3Remove the housing cover.
4Fasten bottom part of housing to the wall
using 4 screws .
5Lead control line for testo 6721 through the
screw connections and connect as described
above (use suitable connector sleeves).
6Lead through and connect mains cable
(100 - 250 V AC, 50/60 Hz) (not supplied).
Recommended wire: 3 x 1 mm2 (L1, N, PE)
Type NYMHYV
iConnect protective conductor to the intended
terminal (use suitable connector sleeves).
Caution! Damage of pressure dewpoint
monitor!
iOperate Alarm box only with connected
protective conductor.
7Replace the housing cover.
8Screw on housing cover and close side covers.
9Tighten cable couplings.
Two fastening pins are supplied. The housing cover can be fastened using
these to prevent it from falling off when opened. As required: Insert the
fastening pins in two of the bores (at left , right, top or bottom) of the cover
and the bottom part.
Function test
The switches of the testo 6721 can be simulated using wire jumpers:
- Connection of P1 with NO1 as test for alarm 1 (LED Limit 1: red)
- Connection of P2 with NO2 as test for alarm 2 (LED Limit 2: red)
Alternatively, a test using the P2A software is suggested, see testo 6721
instruction manual.
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Commissioning6
Select the power supply in such a way that it switches the alarm unit to
potential-free on all terminals via a suitable disconnection system
(emergency OFF). The disconnection system must be positioned close to the
alarm box, be easily recognizable and be marked as a disconnection
system.
Select the installation site so that this does not influence the function of the
disconnection system.
Also please ensure that the operation of the instrument is protected with
suitable current overload protection systems (fuses).
Maintaining the product 7
Maintaining the product
Cleaning the alarm box
If dirty, clean the housing of the measuring instrument with a damp cloth.
Do not use any aggressive cleaning products or solvents! Weak household detergents
or soap solutions can be used.
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testo AG
Postfach 11 40, D-79849 Lenzkirch
Testo-Straße 1, D-79853 Lenzkirch
Telephone: +49 7653 681-0
Fax: +49 7653 681-100
E-mail: [email protected]
Internet: http://www.testo.com
0970 0637 en 06
www.testo.com
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