6
D1080
- Flammable Liquid Presence Detector Interface Relay Output
G.M. International ISM0055-9
Operation
D1080 accepts as an input from Hazardous Area a liquid sensor detector with PNP or NPN transistor output. It also interfaces 3 wire proximity sensor with PNP or NPN output and
repeats their status to Safe Area by a voltage free SPDT relay contact. Presence of supply power and status of output (energized or de-energized) are displayed by signaling LEDs
(green for power, yellow for status). D1080D (dual channel type) has two independent and isolated input channels and actuates the corresponding output relay SPDT contact; two
actuation modes can be independently DIP switch configured for each input channel:
Normally open input / Normally energized relay
or
Normally close input / Normally energized relay Input sensor current consumption is also DIP switch settable in four
position, which correspond a total trip current of 8, 11, 14 and 17 mA (current flow in transistor sensor is setted at
8 mA).
Start-up
Before powering the unit check that all wires are properly connected, particularly supply conductors and their polarity, input and output wires, also check that Intrinsically Safe conductors
and cable trays are segregated (no direct contacts with other non I.S. conductors) and identified either by color coding, preferably blue, or by marking.
Check conductors for exposed wires that could touch each other causing dangerous unwanted shorts.
Turn on power, the “power on” green led must be lit, status led on each channel must be in accordance with condition of the corresponding input line.
If possible close and open input lines one at time checking the corresponding status led condition as well as output to be correct.
D1080 is an isolated Intrinsically Safe Associated Apparatus installed into standard EN50022 T35 DIN Rail located in Safe Area within the specified operating temperature limits
Tamb -20 to +60 °C, and connected to equipment with a maximum limit for AC power supply Um of 250 Vrms.
Not to be connected to control equipment that uses or generates more than 250 Vrms or Vdc with respect to earth ground.
D1080 must be installed, operated and maintained only by qualified personnel, in accordance to the relevant national/international installation standards
(e.g. IEC/EN60079-14 Electrical apparatus for explosive gas atmospheres - Part 14: Electrical installations in hazardous areas (other than mines), BS 5345 Pt4, VDE 165) following the
established installation rules, particular care shall be given to segregation and clear identification of I.S. conductors from non I.S. ones.
Warning: substitution of components may impair Intrinsic Safety.
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
.
Explosion Hazard: to prevent ignition of flammable or combustible atmospheres, disconnect power before servicing or unless area is known to be nonhazardous.
Failure to properly installation or use of the equipment may risk to damage the unit or severe personal injury.
The unit cannot be repaired by the end user and must be returned to the manufacturer or his authorized representative. Any unauthorized modification must be avoided.
Warning
D1080 Associated Apparatus
Safe Area
Hazardous Area
Zone 0, Group IIC, IIB, IIA
Intrinsically
Safe Equipment
Must not use or generate
more than 250 Vrms or Vdc
Control
Equipment
Safe Area
13
14
1
2
+
-
+
Power Supply
3
4
16
15
-
8
Control
Equipment
7
6
5
12
-
Intrinsically
Safe Equipment
+
11
10
9
Installation
D1080 is a liquid presence detector interfaces housed in a plastic enclosure suitable for installation on T35 DIN Rail according to EN50022. D1080 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. 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 and configuration DIP switches.
Identify the function and location of each connection terminal using the wiring diagram on the corresponding section, as an example:
Connect 24 Vdc power supply positive at terminal “3” and negative at terminal “4”.
Connect common relay contact output of channel 1 at terminal “1”, normally closed relay contact at “8” and normally opened relay contact at “2”.
Connect common relay contact output of channel 2 at terminal “5”, normally closed relay contact at “7” and normally opened relay contact at “6”.
Connect sensor supply of channel 1 at terminal “13” for positive and “16” for negative.
Connect sensor supply of channel 2 at terminal “9” for positive and “12” for negative.
Connect sensor output of channel 1 at terminal “14” for NPN transistor output or at terminal “15” for PNP transistor type.
Connect sensor output of channel 2 at terminal “10” for NPN transistor output or at terminal “11” for PNP transistor type.
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),
make sure that conductors are well isolated from each other and do not produce any unintentional connection.
Connect SPDT relay 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 for indoor installation, outdoor installation requires an additional enclosure with higher
degree of protection (i.e. IP54 to IP65) 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 D1080 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, D1080 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.
