fafnir UM Series User Manual

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FAFNIR GmbH  Bahrenfelder Str. 19  22765 Hamburg  Telefon: +49 / (0) 40 / 39 82 07-0  Fax: +49 / (0) 40 / 390 63 39
IV Equipment marking
1 Manufacturer: FAFNIR GmbH, Hamburg
2 Type designation: UM-… Ex
3 Certificate number: TÜV 07 ATEX 345770
4 Ex marking:: II (1) G [Ex ia Ga] IIC
5 CE marking: 0044
6 Technical data: T
a
 +50 °C
U
o
 28.4 V
I
o
 99.5 mA
P
o
 705 mW
IIC
IIB
L
o

680 µH
500 µH
5 mH
2 mH
C
o

59 nF
67 nF
240 nF
290 nF
V Technical data
The power supply for the evaluation unit, depending on model
U = 24 V DC ± 20 %, ~4,7 W, or
U = 24 V AC ± 10 %, 50 … 60 Hz, ~7,5 VA, or
U = 115 V AC ± 10 %, 50 … 60 Hz, ~7,5 VA, or
U = 230 V AC ± 10 %, 50 … 60 Hz, ~7,5 VA.
The maximum safety voltage is
U
m
= 33 V at 24 V AC/DC, resp.
U
m
= 130 V at 115 V AC, resp.
U
m
= 253 V at 230 V AC.
The electric circuit of the sensor is designed with "Intrinsic safety" (ia) ignition protection class with a
linear output characteristic. Output values per electric circuit are
Output voltage U
o
 28.4 V
Output current I
o
 99.5 mA
Output power P
o
 705 mW
Internal capacitance C
i
negligibly small
Internal inductance L
i
negligibly small
Permissible external
IIC
IIB
inductance
L
o

680 µH
500 µH
5 mH
2 mH
capacitance
C
o

59 nF
67 nF
240 nF
290 nF
The intrinsically safe sensor circuits are galvanically isolated from the supply circuit safely up to a peak
crest voltage of 375 V.
As outputs five relays are available each with potential-free relay contacts. The terminal values are:
Alternating current AC U  250 V; I  5 A; P  100 VA; cos   0.7
Direct current DC U  250 V; I  250 mA; P  50 W
When an acknowledge button is used it must be potential-free, as the connectors are wired-up to the
power supply!
The evaluation unit can be used in the following ambient temperature range:
T
a
= -20 °C … +50 °C

fafnir UM Series Specifications

General

Brand	fafnir
Model	UM Series
Category	Measuring Instruments
Language	English