GMI D5263S User manual

D5263 - SIL 2 Load Cell/Strain Gauge Bridge Isolating Repeater G.M. International ISM0227-8
SIL 2 Load Cell/Strain Gauge Bridge
Isolating Repeater, DIN-Rail and Power Bus
Model D5263S
D5263S
INSTRUCTION MANUAL

D5263 - SIL 2 Load Cell/Strain Gauge Bridge Isolating Repeater G.M. International ISM0227-8
2
General Description:
The single channel DIN Rail Load Cell/Strain Gauge Bridge Isolating Repeater D5263S module is a unit suitable for applications requiring SIL 2 level (according to IEC 61508:2010) in
safety related systems for high risk industries.
The unit acts as a transparent galvanic isolated interface installed between a weighing indicator in Safe Area and a load cell (or group of load cells) in Hazardous Area; it appears at the
terminals of the indicator as a single load cell equivalent to the one in the field. It provides a fully floating power supply voltage with remote sensing capability to load cell located in
Hazardous Area and repeats, while isolating, the mV signal output to drive a load in Safe Area depending on the host system reference voltage. Up to four 350 Ωload cells, or five 450
Ωload cells, or ten 1000 Ωload cells can be connected in parallel. The Voltage reference (Safe Area side) is set as an external supply.
Function:
1 channel I.S. input from strain gauge signals, provides 3 port isolation (input/output/supply) and repeats, as a transparent unit, the bridge signal output.
Signalling LED:
Power supply indication (green).
EMC:
Fully compliant with CE marking applicable requirements.
Technical Data
Characteristics
Supply:
24 Vdc nom (18 to 30 Vdc) reverse polarity protected, ripple within voltage limits ≤5 Vpp.
Current consumption @ 24 V: 85 mA with four 350 Ωload cells connected, typical.
Power dissipation: 1.8 W with 24 V supply and four 350 Ωload cells connected typical.
Isolation (Test Voltage):
I.S. In / Out 1.5 KV; I.S. In / Supply 1.5 KV; Out / Supply 500 V.
Input:
up to four 350 Ωload cells in parallel or up to five 450 Ωload cells in parallel or up to ten 1000 Ωload cells in parallel.
A/D conversion time: 12.5 ms
Bridge supply voltage: 4.0 Vdc nominal.
Bridge output signal: 1 to 4 mV/V.
Line resistance compensation: ≤10 Ω.
Output:
Same as Input signal.
Output impedance: 500 Ωtypical.
Excitation voltage: ≥4.0 V typical, ≤15 V maximum. Externally applied.
Transfer characteristic: linear based on mV input.
Response time: ≤100 ms (10 to 90 % step change).
Performance:
Ref. Conditions 24 V supply, 23 ± 1 °C ambient temperature.
Calibration accuracy after system calibration: ≤± 0.003 % of full scale of input range.
Linearity accuracy: ≤± 0.002 % of full scale of input range.
Supply voltage influence: ≤± 0.002 % of full scale for a min to max supply change.
Temperature influence: ≤± 0.002 % of full scale of input range for a 1 °C change.
Compatibility:
CE mark compliant, conforms to Directives:
2014/34/EU ATEX, 2014/30/EU EMC, 2014/35/EU LVD, 2011/65/EU RoHS.
Environmental conditions:
Operating: temperature limits –40 to + 70 °C, relative humidity max 95 % non condensing, up to 55 °C.
Storage: temperature limits – 45 to + 80 °C.
Max altitude: 2000 m a.s.l.
Safety Description:
ATEX: II 3(1)G Ex ec [ia Ga] IIC T4 Gc, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I
IECEx: Ex ec [ia Ga] IIC T4 Gc, [Ex ia Da] IIIC, [Ex ia Ma] I
EAC-EX: 2Ex nA [ia Ga] IIC T4 Gc X, [Ex ia Da] IIIC, [Ex ia Ma] I
CCC: Ex nA [ia Ga] IIC T4 Gc, [Ex ia Ga] IIC, [Ex iaD]
CML: Ex nA [ia Ga] IIC T4 Gc, [Ex ia Da] IIIC
associated apparatus and non-sparking electrical equipment.
Uo/Voc = 7.2 V, Io/Isc = 177 mA, Po/Po = 471 mW at terminals 13-14-15-16-17-18.
Um = 250 Vrms, -40 °C ≤Ta ≤70°C.
Approvals:
TUV 15 ATEX 170897 X conforms to EN60079-0, EN60079-7, EN60079-11.
IECEx TUN 16.0005X conforms to IEC60079-0, IEC60079-7, IEC60079-11.
RU C-IT.EX01.B.00018/19 conforms to GOST 31610.0,GOST 31610.11, GOST 31610.15.
CCC 2020322316000978 conforms to GB3836.1, GB3836.4; GB3836.8, GB12476.1, GB12476.4.
CML 20JPN2136X for CML approval.
DNV No. TAA00001U0 and KR No.MIL20769-EL002 for maritime applications.
SIL 2 conforms to IEC61508:2010 Ed.2.
Mounting:
EN/IEC60715 TH 35 DIN-Rail, with or without Power Bus.
Weight: about 165 g.
Connection: by polarized plug-in disconnect screw terminal blocks to accommodate terminations up to 2.5 mm2(13 AWG).
Location: installation in Safe Area or Zone 2, Group IIC T4.
Protection class: IP 20.
Dimensions: Width 22.5 mm, Depth 123 mm, Height 120 mm.

D5263 - SIL 2 Load Cell/Strain Gauge Bridge Isolating RepeaterG.M. International ISM0227-8 3
Input from Zone 0 (Zone 20), installation in Zone 2.
Strain Gauge Bridge Transparent Repeater.
Up to four 350 Ωload cells in parallel or up to five 450 Ωload cells in parallel or up to ten 1000 Ωload cells in parallel.
High Accuracy.
Three port isolation, Input/Output/Supply.
EMC Compatibility to EN61000-6-2, EN61000-6-4, EN61326-1, EN61326-3-1 for safety system.
ATEX, IECEx, EAC Ex, CCC, CML Certifications.
Type Approval Certificate DNV and KR for maritime applications.
High Reliability, SMD components.
Simplified installation using standard DIN Rail and plug-in terminal blocks, with or without Power Bus.
250 Vrms (Um) max. voltage allowed to the instruments associated with the barrier.
2
0
1
6
1
5
1
9
1
8
14
1
7
1
3
1 2 3 4
D5263
5 6 7 8
9 1
0
11 12
PWR
SIL 2
13 14 15 16 4 3 2 1
8 7 6 5
12 11 10 9
17 18 19 20
Front Panel and Features
Terminal block connections
Ordering Information
Model: D5263S Power Bus and DIN-Rail accessories:
Connector JDFT050
Cover and fix MCHP196
Terminal block male MOR017
Terminal block female MOR022
HAZARDOUS AREA SAFE AREA
+ Output Ch 1 EXC (Weighting Indicator)
1
+ Output Ch 1 Sense (Weighing Indicator)
2
- Output Ch 1 Sense (Weighing Indicator)
3
- Output Ch 1 EXC (Weighting Indicator)
4
+ Output Ch 1 IN (Weighing Indicator)
5
- Output Ch 1 IN (Weighing Indicator)
6
+ Power Supply 24 Vdc
9
- Power Supply 24 Vdc
10
Not used
11
Not used
12
Not used
7
Not used
8
+ Input Ch 1 EXC (Load cell)
13
+ Input Ch 1 Sense (Load cell)
14
- Input Ch 1 Sense (Load cell)
15
- Input Ch 1 EXC (Load cell)
16
+ Input Ch 1 IN (Load cell)
17
- Input Ch 1 IN (Load cell)
18
Not used
19
Not used
20

D5263 - SIL 2 Load Cell/Strain Gauge Bridge Isolating Repeater G.M. International ISM0227-8
4
Parameters Table
In the system safety analysis, always check the Hazardous Area/Hazardous Locations devices to conform with the related system documentation, if the device is Intrinsically Safe check
its suitability for the Hazardous Area/Hazardous Locations and group encountered and that its maximum allowable voltage, current, power (Ui/Vmax, Ii/Imax, Pi/Pi) are not exceeded
by the safety parameters (Uo/Voc, Io/Isc, Po/Po) of the D5263 series Associated Apparatus connected to it. Also consider the maximum operating temperature of the field device,
Check that added connecting cable and field device capacitance and inductance do not exceed the limits (Co/Ca, Lo/La, Lo/Ro) given in the Associated Apparatus parameters for the
effective group. See parameters indicated in the table below:
Must
be
Hazardous Area/Hazardous
Locations Device Parameters
D5263 Associated
Apparatus Parameters
D5263 Terminals
Function Diagram
HAZARDOUS AREA ZONE 0 (ZONE 20) GROUP IIC SAFE AREA, ZONE 2 GROUP IIC T4
Uo / Voc = 7.2 V Ui / Vmax≤
13 - 14 - 15 - 16 - 17 - 18
Io / Isc = 177 mA Ii / Imax≤
Po / Po = 471 mW Pi / Pi≤
Must
be
Hazardous Area/Hazardous
Locations Device Parameters
D5263 Associated
Apparatus Parameters Cenelec (US)
D5263 Terminals
IIC (A,B)
Co / Ca = 0.3 µF
Ci / Ci device + C cable≥
13 - 14 - 15 - 16 - 17 - 18
IIB (C)
Co / Ca = 1.5 µF
IIA (D)
Co / Ca = 2.2 µF
I
Co / Ca = 2.8 µF
IIIC (E, F, G)
Co / Ca = 1.5 µF
IIC (A,B)
13 - 14 - 15 - 16 - 17 - 18
IIB (C)
IIA (D)
I
IIIC (E, F, G)
Lo / La = 0.5 mH
Lo / La = 6.5 mH
Lo / La = 9.5 mH
Lo / La = 13 mH
Lo / La = 6.5 mH
Characteristic: trapezoidal.
If the cable parameters are unknown, the following values may be used: capacitance 200 pF per meter (60 pF per foot), inductance 1 µH per meter (0.20 µH per foot).
13 - 14 - 15 - 16 - 17 - 18
13 - 14 - 15 - 16 - 17 - 18
Li / Li device + L cable≥
Up to 10 load cells 1000 Ωin parallel
Up to 4 load cells 350 Ωin parallel
Up to 5 load cells 450 Ωin parallel
13
14
9 +
10 -
1
Supply 24 Vdc
15
16
17
18 =
=2
3
4
5
Weighting Indicator
==
=
6
+EXC
+Sense
-Sense
-EXC
+IN
-IN
Out 1
+Sense
+EXC
-Sense
-EXC
+IN
-IN
Load cell
In 1
MODEL D5263S
+
-
Power Bus
SIL 2

D5263 - SIL 2 Load Cell/Strain Gauge Bridge Isolating RepeaterG.M. International ISM0227-8 5
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.
Before turning power on, field load cell must be connected to the module. Then, turn power on, the “power on” green led must be lit, the unit repeats the load cell condition, check
with the weighing indicator the proper value reading.
Installation
D5263 series is a Load Cell/Strain Gauge Bridge Isolating Repeater housed in a plastic enclosure suitable for installation on EN/IEC60715 TH 35 DIN-Rail, with or without Power Bus.
D5263 series can be mounted with any orientation over the entire ambient temperature range.
Electrical connections 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 installations check the area to be nonhazardous before servicing). Connect only one individual conductor per each clamping point, use conductors up to 2.5 mm²
(13 AWG) and a torque value of 0.5-0.6 Nm. Use only cables that are suitable for a temperature of at least 85°C.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 in the corresponding section, for example:
Connect a 24 Vdc power supply voltage between terminals “9” (positive pole) and “10” (negative pole).
Connect positive output at terminal “5” and negative output at “6”.
Connect host reference voltage at terminal “1” positive and terminal “4” negative.
If host system has remote voltage sensing capability, connect sensing wire at terminal “2” positive and terminal “3” negative.
Connect strain gauge bridge voltage supply at terminal “13” positive and terminal “16” negative.
Connect strain gauge bridge voltage sensing supply at terminal “14” positive and terminal “15” negative.
If strain gauge bridge has no internal voltage sensing capability always connect terminal "14" to terminal "13" and terminal "16" to terminal "15";
for better performance connect the wire at the end of the line near the load cells.
Connect strain gauge bridge output signal at terminal “17” positive and terminal “18” 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)), make sure that conductors are well isolated from each other
and do not produce any unintentional connection. Isolation in accordance with EN/IEC 60079-11 clause 6.3.13 is provided between non-intrinsically safe circuits and intrinsically safe
circuits.
The enclosure provides, according to EN60529, an IP20 minimum degree of protection (or similar to NEMA Standard 250 type 1). The equipment shall only be used in an area of at least
pollution degree 2, as defined in IEC 60664-1. When installed in EU Zone 2, the unit shall be installed in an enclosure that provides a minimum ingress protection of IP54 in accordance
with IEC 60079-0. The enclosure must have a door or cover accessible only by the use of a tool. The end user is responsible to ensure that the operating temperature of the module is
not exceeded in the end use application.
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 D5263 series 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 modification must be avoided.
D5263 series must be connected to SELV or PELV supplies.
All circuits connected to D5263 series must comply with the overvoltage category II (or better) according to EN/IEC60664-1.
D5263 series is an isolated Intrinsically Safe Associated Apparatus installed into standard EN/IEC60715 TH 35 DIN-Rail located in Safe Area or Zone 2, Group IIC, Temperature T4
Hazardous Area within the specified operating temperature limits Tamb –40 to +70 °C, and connected to equipment with a maximum limit for power supply Um of 250 Vrms or Vdc.
Not to be connected to control equipment that uses or generates more than 250 Vrms or Vdc with respect to earth ground.
D5263 series must be installed, operated and maintained only by qualified personnel, in accordance with 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)), following the established installation rules; particular care
must be given to segregation and clear identification of I.S. conductors from non I.S. ones.
De-energize power source (turn off power supply voltage) before plug or unplug the terminal blocks when installed in Hazardous Area or unless area is known to be nonhazardous.
Warning: substitution of components may impair Intrinsic Safety and suitability for Zone 2.
Explosion Hazard: to prevent ignition of flammable or combustible atmospheres, disconnect power before servicing or unless the area is known to be non-hazardous.
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
Operation
The D5263 series strain gauge bridge isolating repeater acts as transparent galvanic isolated interface between weighing indicator in Safe Area/Non Hazardous Locations and a load cell
(or group of n load cells) installed in Hazardous Area/Hazardous Locations.
It provides a fully floating power supply voltage with remote sensing capability to strain gauge bridge and repeats the corresponding output signal.
Remote sensing wires (terminals “14” +Sense and “15” –Sense) must be always connected to force lines (terminals “13” +Exc and “16” –Exc) for proper operation of the unit, in case of
4 wires cell connect the sensing lines near to the cell connections to minimize the power supply voltage compensation error.
The mV input signal is isolated and repeated to Safe Area/Non Hazardous Locations to drive a weighing indicator.
The unit appears at the terminals of the indicator as a single load cell equivalent to the one installed in the field area.
The mV output signal is proportional to the reference voltage of the host system.
A “POWER ON” green led lits when input power is present.