10
D1054
- SIL 2 Repeater Power Supply and Trip Amplifiers
G.M. International ISM0067-18
Installation
D1054 is a repeater power supply with trip amplifiers housed in a plastic enclosure suitable for installation on T35 DIN Rail according to EN50022.
D1054 unit can be mounted with any orientation over the entire ambient temperature range, see section “Installation in Cabinet” and "Installation of Electronic Equipments in Cabinet"
Instruction Manual D1000 series for detailed instructions.
Electrical connection of conductors up to 2.5 mm2 are accommodated by polarized plug-in removable screw terminal blocks which can be plugged in/out into a powered unit without
suffering or causing any damage
(for Zone 2 or Division 2 installations check the area to be nonhazardous before servicing)
.
The wiring cables have to be proportionate in base to the current and the length of the cable.
On the section “Function Diagram” and enclosure side a block diagram identifies all connections.
Identify the function and location of each connection terminal using the wiring diagram on the corresponding section, as an example:
Connect 12-24 Vdc power supply positive at terminal “3” and negative at terminal “4”.
Connect positive output of analog channel at terminal “1” and negative output at “2”.
Connect trip amplifier output of alarm A at terminal “5” and “6” and trip amplifier output of alarm B at terminal “7” and “8”.
In case of a 2 wire input transmitter, connect the wires at terminal “14” for positive and “15” for negative.
For separately powered transmitters, connect input signal at terminal “15” for positive and “16” for negative.
Intrinsically Safe conductors must be identified and segregated from non I.S. and wired in accordance to the relevant national/international installation standards
(e.g. EN/IEC60079-14 Electrical apparatus for explosive gas atmospheres - Part 14: Electrical installations in hazardous areas (other than mines), BS 5345 Pt4, VDE 165,
ANSI/ISA RP12.06.01 Installation of Intrinsically Safe System for Hazardous (Classified) Locations, National Electrical Code NEC ANSI/NFPA 70 Section 504 and 505,
Canadian Electrical Code CEC), make sure that conductors are well isolated from each other and do not produce any unintentional connection.
Connect SPST alarm contacts checking the load rating to be within the contact maximum rating (2 A, 250 V, 500 VA 80 W resistive load).
The enclosure provides, according to EN60529, an IP20 minimum degree of mechanical protection (or similar to NEMA Standard 250 type 1) for indoor installation, outdoor installation
requires an additional enclosure with higher degree of protection (i.e. IP54 to IP65 or NEMA type 12-13) consistent with the effective operating environment of the specific installation.
Units must be protected against dirt, dust, extreme mechanical (e.g. vibration, impact and shock) and thermal stress, and casual contacts.
If enclosure needs to be cleaned use only a cloth lightly moistened by a mixture of detergent in water.
Electrostatic Hazard: to avoid electrostatic hazard, the enclosure of D1054 must be cleaned only with a damp or antistatic cloth.
Any penetration of cleaning liquid must be avoided to prevent damage to the unit. Any unauthorized card modification must be avoided.
According to EN61010, D1054 series must be connected to SELV or SELV-E supplies.
Relay output contact must be connected to loads non exceeding category I, pollution degree I overvoltage limits.
Warning: de-energize main power source (turn off power supply voltage) and disconnect plug-in terminal blocks before opening the enclosure to avoid electrical shock
when connected to live hazardous potential
.
The proof test shall be performed to reveal dangerous faults which are undetected by diagnostic. This means that it is necessary to specify how dangerous undetected fault,
which have been noted during the FMEDA, can be detected during the proof test.
Testing procedure at T-proof
Steps
Action
1
Bypass the Safety PLC or take other appropriate action to avoid a false trip.
2
Connect a mA signal generator to the input terminals (‘14’-‘15’ as passive input transmitter or ‘15’-‘16’ as active input transmitter) of the repeater.
3
Force an input current signal value to go module current output to full scale value (
≥
20 mA) and verify that the analog current reaches that value.
This tests is for voltage compliance problems, such as low supply voltage or increased wiring resistance, and for other possible failures.
4
Force an input current signal value to go module current output to low scale value (
≤
4 mA) and verify that the analog current reaches that value.
This tests is for possible quiescent current related failures.
5
Restore the loop to full operation.
Proof test 1A
(to detect approximately 50 % of possible Dangerous Undetected failures)
6
Remove the bypass from the Safety PLC or restore normal operation.
Steps
Action
1
Bypass the Safety PLC or take other appropriate action to avoid a false trip.
2
Perform steps 2, 3 and 4 of
Proof Test 1A
.
3
Force some input current signal values, included in the range 4-20 mA, verifying that the module output current related values are within the specified accuracy (3 % (± 0.5 mA)
of full span) as defined in the Safety Function. This test requires that mA signal generator has already been tested without the repeater and that it works correctly according to
its specifications.
4
Restore the loop to full operation.
5
Remove the bypass from the Safety PLC or restore normal operation.
Proof test 2A
(to detect approximately 99 % of possible Dangerous Undetected failures)
Steps
Action
1
Bypass the Safety PLC or take other appropriate action to avoid a false trip.
2
Connect a mA signal generator to the input terminals (‘14’-‘15’ as passive input transmitter or ‘15’-‘16’ as active input transmitter) of the repeater.
3
For each trip amplifier, force an input current signal value to go module to the high alarm current output and verify that the related relay contact (on terminal blocks 5-6 for
trip amplifier 1 or terminal blocks 7-8 for trip amplifier 2) is switched respect to previous normal condition.
4
For each trip amplifier, force an input current signal value to go module to the low alarm current output and verify that the related relay contact (on terminal blocks 5-6 for
trip amplifier 1 or terminal blocks 7-8 for trip amplifier 2) is switched respect to previous normal condition.
5
Restore the loop to full operation.
Proof test 1B
(to detect approximately 50 % of possible Dangerous Undetected failures)
6
Remove the bypass from the Safety PLC or restore normal operation.
Test for D1054S (for each alarm trip amplifier with relay output):
Steps Action
1
Bypass the Safety PLC or take other appropriate action to avoid a false trip.
2
Perform steps 2, 3 and 4 of
Proof Test 1B
.
3
Force some input current signal values, included in the range 4-20 mA, and for each trip amplifier set an alarm current value in the range 4-20 mA. Verify that the related
relay contact (on terminal blocks 5-6 for trip amplifier 1 or terminal blocks 7-8 for trip amplifier 2) is switched when input signal increases / decreases (according to high / low
alarm setting) above / below the alarm current value, considering a maximum error of 3% between input signal value and set alarm current value.
4
Restore the loop to full operation.
5
Remove the bypass from the Safety PLC or restore normal operation.
Proof test 2B
(to detect approximately 99 % of possible Dangerous Undetected failures)
Test for D1054S (analog current output):
