Installation and operating manual
42
010-700_01
2.5.1 Additional information on ATEX design
The requirements of the standards EN 50014 +
A1-A2, EN 50020:2002 are satisfied.
Permissible air humidity
10 to 80%, non-condensing
Maximum operating height
2000 m above sea level
Maximum power consumption
11 VA Mono / 15 VA Duo systems
(terminals N, L1, L2, L3, PE)
Three-phase current
230 V (AC) / 50 Hz +- 10% to supply the
electronics
Input circuits
(terminals TF1a, TF2a, TF1b, TF2b)
Thermal inputs Un = 230V
Output circuit potential-free contact
U = 42 V AC DC /0.5 A
Power contactor
Switching contacts U = 400V +-10% <=4kW
(P2), 50Hz
Control elem. power circuit
Passive (switches and buttons)
The control unit must be operated outside the potentially explosive area. The
necessary classification: Group II, Category (1)G, appropriate operating equipment
for a gas atmosphere.
Technical specification (single barrier)
Level circuit
in type of protection intrinsic safety Ex ia IIC
Float switch terminals:
OFF, ON1, ON2, ALARM
Level probe terminals:
Probe 2 bk + bl
Max. values*:
Uo
28 V
Io
93 mA
Ro
300 Ω
Po
0.65 W
Co
0.083 µF
Lo
16 mH
Lo/Ro
106 µH/Ω
*Zener barrier MTL 7787+
EU type approval certificate for the Zener barriers
Standard marking
II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC (-20°C ≤ T
a
≥ 60°C)
II (1) GD [Ex ia Ga] IIC
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