Technical data Function
General specifications
The VAA-4A-G5-V2-Ex module can beinstalled in zone1 hazardous areas. Themodule itself is encapsulated (EExm), whilethe connection system of the AS-i cable is
designed for use with increased safety. The VAA-4A-G5-V2-Ex can be connected to4 intrinsically industrial safe switch cocks, i.e. the con-trol circuit is intrinsically safe.
Slave type Standard slaveEC-Type Examination Certificate DMT 99 ATEX E 072 Group, category, type of protection ¬ II (1GD) 2G EEx em [ia] IIB/IIC T4 Intrinsically safe input and output circuits can be fed into areas in the categories 1G and 1D.
Masters and GatewaysPower Supplies, Extender, RepeatersSafety at workI/O ModulesControl cabinetI/O ModulesField applicationAnalogue modules Indicators/operating means
LED PWR/CHK dual-LED green/redgreen: AS-Interface voltage, normal operationred: communication error or address 0LED OUT switching state (output); 4 LED yellow
Note: If two channels are connected incorrectly,the output voltage might be reduced. To reseta module, it has to be disconnected from thesupply.
Electrical specifications
Safety maximum voltage U
m 40 V Rated operational voltage U
e 26.5 ... 31.6 V from AS-InterfaceRated operational current I
e 250 mA Time delay before availability t
v 1 s
Output
Number/Type 4 outputs EEx ia IIC for controlling intrinsically safe valvesValues in accordance with prototype test certificate Voltage U
28 V DCCurrent I
110 mA Power P
770 mWInternal resistor R
i 258 Type of protection EEx ia IIB EEx ia IICExternal capacitance C
650 nF 83 nF External inductance L
10 mH 1 mHNominal values (typically) Open loop voltage U
A0 26 VShort-circuit current I
AK 50 mA Internal resistor R
I 270 Curve angle pointsurve angle points((nominal values) U 12.5 V DC, 50 mA
E /I
E Programming instructions
Profile S-8.F IO code 8ID code F Data bits (function via AS-Interface) inputoutput D0 IN4O4 D1 -OUT2D2 -OUT3 D3 -OUT4 Parameter bits (programmable via AS-i) function P0/P1 (Output conditions on failure of the AS-Interface communica-tion) 0/0 Outputs old value0/1 outputs not controlled1/0 outputs controlled
1/1 outputs not controlledP2 not used
Other modulesInductive sensorsPhotoelectric sensorsRotary encodersAccessories P3 not used
Ambient conditions
Ambient temperature -20 ... 65 °C (253 ... 338 K)Storage temperature -20 ... 85 °C (253 ... 358 K)
Mechanical specifications
Protection degree IP54 according to EN 60529 Connection screw terminalsMass 1.5 kg Mounting screw mounting
Issue date 2004-11-19 - Catalogue AS-Interface 2004/2005 Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in German y Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.co m
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