Ex ec nC IIC T4 Gc (-20 °C ≤ Tamb ≤ +60 °C)
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.
The 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.
KFD2-DU-Ex1.D: Switch Amplifier, Timer Relay.
It is a highly configurable timer that accepts a digital signal (NAMUR sensor/mechanical contact) from a hazardous area and is commonly used in applications requiring on-delay, offdelay, one-shot, or pulse lengthening. The output relay switch duration is easily adjusted, and a pulse divider function allows step-down ratios from 1:1 to 9999:1. A reset can be activated via dry contact switch and used to terminate a particular time function.
KFD2-DWB-Ex1.D: Rotation Speed Monitor.
It monitors for an overspeed or underspeed condition of a digital signal (NAMUR sensor/mechanical contact) from a hazardous area by comparing the input frequency to the user programmed reference frequency. An overspeed or underspeed condition is signaled via the relay outputs. Line fault detection of the field circuit is indicated by a red LED, Power Rail and relay. The start-up override feature sets relay outputs to default conditions programmed by the user for up to 1,000 seconds.
KFD2-UFC-Ex1.D: Frequency Converter with trip values.
The device is a universal frequency converter that changes a digital input signal into a proportional free adjustable 0/4 mA ... 20 mA analog output signal and functions as a switch amplifier and a trip alarm. The functions of the switch outputs (2 relay outputs and 1 potential free transistor output) are easily adjustable [trip value display (min/max alarm), serially switched output, pulse divider output, error signal output].
KFD2-UFT-Ex2.D: Frequency Converter with direction and synchronization monitor.
It analyzes 2 digital signals (NAMUR sensor/mechanical contact) from a hazardous area and functions as a rotation direction indicator, slip monitor, frequency monitor or synchronization monitor. Each proximity sensor or switch controls a passive transistor output. The 2 relay outputs indicate if the input signal is above or below the trip value or the rotational direction. The analog output can be programmed to be proportional to the input frequency or slip differential.
Each device comprises of two PCBs, one is the power supply and the other is the amplifier PCB.
1. The device must be installed and operated only in an environment of overvoltage category II (or better) according to IEC 60664-1;
2. The device must be installed and operated only in a control environment that ensures a pollution degree 2 (or better) according to IEC 60664-1;
3. The device must be installed and operated only in enclosures that:
4. Use operating elements only in the absence of a hazardous atmosphere;
5. Connection or disconnection of energized non-intrinsically-safe circuits is only permitted in the absence of a hazardous atmosphere.
DescriptionKFD2 - DU/DWB/UFC/UFT-Ex*.D***
Schematic UFT Amplifier
KFD2 - DU/DWB/UFC/UFT-Ex*.D***