Advertisement
ExCos-D...
Electrical wiring
ExCos-D... transducer require a 24 VAC/DC power supply. The supply has to be connected at
terminal 1 (– / ~) and 2 (+ / ~), the analogue output at terminal 3 (mA/V) and 4 (GND) for
temperature, at terminal 5 (mA/V) and 4 (GND) for humidity. The electrical wiring must be realized
via integrated Ex-e junction box in acc. to ATEX. Type of protection for the terminals is "Ex-e".
Attention! Before opening the junction box cover, the supply voltage must be shut off!
The optional analogue output at ExCos-D-A is intrinsically safe. Note the maximum connection
values of intrinsically safe parameters (see table below).
Wiring diagram ExCos-D...
ExCos-D...
24 VAC/DC
–
+
~
~
°C
% rH
(0)4...20 mA
(0)4...20 mA
0...10 V
0...10 V
GND
PE
°C /% rH
1
2
3
4
5
Wiring
Ex-i output (optional) at ExCos-D-...A transducer
Terminals
SB 3.0
Male connector
4 1
5
3
2
–
+
to connect e.g.
an external LCD indicator
The ExPro-C... probe can be mounted to
the front or the back side of the transducer.
The protective cap must be removed.
Unused connectors must be covered by a
protective cap against mechanical damage
and dirt.
Dimensions / Drillings
68
80
107
Schischek GmbH Germany, Mühlsteig 45, Gewerbegebiet Süd 5, 90579 Langenzenn, Tel. +49 (0)9101 9081-0, Fax +49 (0)9101 9081-77, E-Mail info-de@schischek.com
In acc. to the connected ExPro-C...
SB 2.0
sensor you get output signals at
following terminal:
sensor
terminal terminal
ExPro-CT...
3 - 4
ExPro-CF...
ExPro-CTF...
3 - 4 und 4 - 5
It's either output mA or V adjustable.
Attention !
Humidity output below 0 °C no
PA
function
Head side of ExCos-D-A sensor
Female connector
1
3
Connector 1 for output of sensor 1 (°C)
Connector 2 for output of sensor 2 (%rH)
Values IS (optional)
Uo = 15,8 V
Io = 85 mA
Po = 336 mW
Ci = 0
Li = 0
Co(IIC) = 0,33 nF
Lo(IIC) = 2 mH
55
66
www.schischek.com
Parameter
Before starting parametrisation of ExCos-D... transducer an ExPro-C... sensor must be
connected. ExPro-C... sensors are available as ExPro-CT... for single temperature measure-
ment, as ExPro-CF... for single humidity measurement and as ExPro-CTF... for combined
measurement of temperature and humidity. All types are connectable to an ExCos transducer
but only one sensor to one transducer. In acc. with the sensor type you need to set parameter
for one or two measuring ranges.
Display and Buttons
E X P L O S I O N P R O O F
4 - 5
Change operation- /parametrisation mode
To change from operation to parametrisation mode and vice versa, push the enter button
for minimum 3 seconds.
Indication of data logging
A blinking star in the display shows that data is received and the device is working.
Password input
The default / delievery setup is 0000. In this configuration the password input is not
activated. To activate a password, go to menu point 20, change the 4 digits into your
choosen numbers (e.g. 1234) and press Enter.
Please keep your password in mind for next parameter change !
Due to a new parameter setup the password is requested.
2
Important information for installation and operation
A. Installation, commissioning, maintenance
The cable has to be drawn through the cable gland. After electrical connection the
4
cable gland must be fixed tighten. IP66 must be fulfilled.
In acc. with operation ExCos sensors are maintenance free. Nevertheless maintenance
must comply with regional standards, rules and regulations.
The sensors must not be opened by the customer. For outdoor installation a protective
housing against rain, snow and sun should be applied. For electrical connection use
the internal approved Ex-e junction box.
Attention: Note the explosion proof rules before opening the internal junction box.
Cut off the power supply.
B. ExPro-C... sensors
ExPro-C... sensors are supplied with an instrinsically safe circuit from the ExCos-D...
transducer. Unused connectors must be covered by a protective cap.
C. Long cabling
For using long signal wires, shilded cables are recommended. The shield must be
connected to the ExCos-D transducer inside the terminal box.
D. Separate ground wires
Use for supply and signal wires a separate ground.
Values intrinsically safe (IS) for ExPro-C... sensors
Ø ExPro
Digital ExPro-C... sensor
Uo = 7,9 V
Io = 48 mA
Po = 95 mW
Ci = 0
Li = 0
Co(IIC) = 1,3 nF
Lo(IIC) = 2 mH
E X P L O S I O N P R O O F
Display for
programming and
indication
Push button
ENTER
Push button
for level select
3 / 4
Advertisement
