Certificate history:
This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
This Unit verification certificate is issued as verification that the Apparatus identified on page 1, was assessed and tested and found to comply with the IEC Standard list below. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
STANDARDS: The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:
As this is a Unit Verification Certificate, no QAR is applicable as this certificate is specific to the items listed by serial number or other unique identification.
Supply circuit
(terminals 23, 24)
U = 115 V a.c. (KFA5-)
U = 230 V a.c. (KFA6-)
U = 20 V to 90 V d.c. or
48 V to 230 V a.c. (KFU8-)
U m = 253 V
U m = 125 V d.c. or
U m = 253 V a.c.
or via Power Rail
U = 20 V to 30 V d.c.
U m = 40 V
Contact circuits
(terminals 10, 11, 12 and 16, 17, 18)
alternating voltage
U = 253 V
I = 2 A
direct voltage
U = 40 V
Transistor outputs
(terminals 19, 20, 21)
Start up bridging resp. reset
(terminals 13, 14, 15)
Interface RS232
(jacked)
Input circuit
(terminals 1, 3 resp. 4, 6)
in type of protection "Intrinsic Safety" Ex ia IIC
Maximum values:
one input
U o = 10,1 V
I o = 13 mA
P o = 34 mW
characteristic line: linear
two inputs in parallel
I o = 26 mA
P o = 68 mW
Maximum permissible reactances:
circuit
Ex ia IIA
Ex ia IIB
Ex ia IIC
L o
1000 mH
730 mH
195 mH
C o
93 mF
19,4 mF
2,87 mF
two inputs
600 mH
170 mH
46 mH
in parallel
The above mentioned values of the outer reactances apply only, on condition that the simultaneous appearance of the outer inductance and capacitance does not need to be considered (e.g. in case of lines).
In the case of simultaneous appearance capacitance and inductance in concentrated form the calculated permissible maximum values have to be taken from the following table:
20 mH
10 mH
5 mH
3,0 µF
1,5 mF
0,4 mF
1,4 mF
0,3 mF
Lo and Co values for IIA are verified by the ignition spark tests.
