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
Ω
load cells, or five 450
Ω
load cells, or ten 1000
Ω
load 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
Ω
load cells connected, typical.
Power dissipation:
1.8 W with 24 V supply and four 350
Ω
load 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
Ω
load cells in parallel or up to five 450
Ω
load cells in parallel or up to ten 1000
Ω
load 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
Ω
typical.
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 mm
2
(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.
