19
TwinControl
.
OPERATING MANUAL
EDITION 04/2010
PART NO. DOC393831
Remote control connection
with ignition protection type Ex ia IIB:
Connection of maximum values
Connection RC
Maxi. voltage
U
0
[V]
12.6
Maxi. current
I
0
[mA]
154
Maxi. power
P
0
[mW]
484
Maxi. External capacity
C
0
[uF]
7.3
Maxi. External inductivity
L
0
[mH]
6
The abovementioned values for the maximum permissible external capacities and induct-
ances are only valid as long as they do not occur simultaneously.
If the external reactances are present simultaneously, the values are to be taken from the
following table.
Maximum permissible external inductance L
0
[mH]
0.1
0.2
0.5
1.0
2.0
5.0
Maximum permissible external capacity
C
0
[uF]
7.3
5.9
4.4
3.5
2.7
1.8
Service connection:
Only for connection to relevant programming devices and only outside the potentially
explosive area.
Special conditions (X):
1. The information in the Operating Manual must be observed, particularly in respect of
earthing and connecting the equipotential bonding, and integrating the equipment
into an existing system for equipotential bonding.
2. Opening the housing in environments with explosive gas atmospheres is not
permitted.
3. Plugging in the service connector in explosive environments is not permitted, and may
only be carried out by authorized maintenance personnel.
4.
Maintenance and service tasks inside the housing may only be performed by authorized
personnel.
5. No changes in the pressure control valve (inside the housing of the TwinControl control
unit) for the turbine or at the relief valves may be made.
6. A maintenance plan must be prepared for the TwinControl control unit, or this unit
must be integrated into an existing maintenance plan.
7. In order to prevent soiling inside the housing of the TwinControl control unit, the
integrity of the front fi lm must be checked at regular intervals. In the event of damage,
the equipment must be removed from the Ex zone immediately and put out of
operation, and repaired by Wagner.
8. When designing and installing the compressed air system, it must be ensured that no
explosive atmosphere can arise within the system.
9. Only Wagner potentiometers may be connected to the potentiometer connections.
10. The remote control cable must be laid securely and safely protected from damage.
The remote control may be used in potentially explosive environments; the maximum
permitted cable length is 75 m; 246 ft.
