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TCA-SDI digital input safety barrier (with SIL functional safety)
· Functional safety meets SIL 2 of IEC 61508. 1 in 1 out, 1 in 2 out, 2 in 2 out. Contact switch, NAMUR proximity switch, OC signal or level signal, intrinsically safe input. Line fault detection alarm function. Relay contact output, OC signal or level signal output.
· The DSA-SDI digital input barrier is suitable for OC, level, contact switch or NAMUR proximity switch input in hazardous areas on site. After isolation, it is transmitted to the control system of the safety zone or other instruments by relay contact output (or OC output, level output).
· Functional safety up to SIL 2 of IEC 61508.
· Available in multiple channel styles (optional).
· Line fault detection function (optional).
Model /Selection Table:
Option |
Model and code |
Description |
Basic model |
DSA-SDI |
Digital input barrier |
Channel form |
11 |
1 in 1 out |
12 |
1 in 2 out |
|
22 |
2 in 2 out |
|
Special function |
W |
No line fault detection alarm function |
|
Default, no special function |
|
Input signal |
-C |
NAMUR proximity switch or contact switch |
-O |
OC signal |
|
-L |
Level signal |
|
-Z |
Special order |
|
Output signal |
C |
Relay (normally open) contact |
O |
OC signal |
|
L |
Level signal |
|
Z |
Special order |
|
Power supply voltage |
-V1 |
Power supply (terminal) 20 ~ 32VDC |
-V2 |
Power supply (rail) 20~32VDC (special power supply DIN rail required) |
|
Service Code |
-QC9A |
Product Service Code |
Selection example Optional accessories |
Technical data:
Size:
Width |
12.7mm |
Height |
119.3mm |
Depth |
115.7mm |
Housing Material / Color |
PC(Polycarbonate)+PPT Material / Black Gray |
Protection level |
IP20 |
Environmental conditions:
Ambient temperature |
-20~+60℃ |
Ambient temperature (storage or operation) |
-40~+80℃ |
Ambient humidity (operation) |
5~95%RH (no condensation) |
Input (intrinsically safe):
Input Type |
NAMUR Proximity Switch or Contact Switch, OC, Level |
Open circuit voltage |
8V±0.5V |
Switching threshold |
1.5±0.2mA |
Switch hysteresis |
≤0.1mA |
Open circuit current / short circuit current |
<0.1mA / <5±1mA |
Output:
Relay contact output |
|
Contact Type |
NO Contact |
Contact capacity |
30VDC,1A |
Load Type |
Resistive Load |
Response time |
≤10ms |
OC signal output |
|
External power supply (Vcc) |
≤40V |
Drive current |
≤40mA |
Collector output |
High level Vcc, low level ≤2.5V |
Emitter output |
High level Vcc-2.5V, low level ≤0.5V |
Load resistance |
2KΩ≤RL≤20KΩ |
Level signal output |
|
24V system PLC/DCS |
High level: 16V≤VH≤24V |
12V system PLC/DCS |
High level: 9V≤VH≤12V |
5V system PLC/DCS |
High level: 4.5V≤VH≤5V |
Low level |
≤0.5V(when the drive current is ≤10mA) |
Load resistance |
≥1KΩ |
Power supply:
Rated supply voltage |
24VDC |
Power supply voltage range |
20~32VDC |
Maximum current consumption |
<14mA (1 in 1 out); <20mA (1 in 2 out); <25mA (2 in 2 out) |
General parameters:
Electrical isolation |
Input-output-power supply: 2500V AC RMS / 1 minute |
Electromagnetic compatibility (EMC) |
in accordance with IEC 61326-1 (GB/T 18268), IEC 61326-3-1 |
LED status indication |
·Power on, the product model on the panel is clearly visible through the LED backlight perspective, white. |
Applicable occasions |
Installed in a safe place, can be connected with intrinsically safe equipment in Zone 0, Zone 1, Zone 2; IIC, IIB, IIA; T4~T6 danger zone |
Field device suitable for connection |
OC, level, contact switch, proximity switch |
Mounting method |
Horizontal or vertical mounting, can be mounted on standard 35mm DIN rail (or dedicated busbar backplane powered DIN rail) |
Wiring parameters:
Rigid conductor cross section (min/max) |
0.5mm²/2.5mm² |
Flexible conductor cross section (min/max) |
0.5mm²/2.5mm² |
Minimum Conductor Cross Section (AWG)) |
24 |
Maximum Conductor Cross Section (AWG) 14 |
14 |
Stripping length |
7mm |
Connection type |
M3 screw fastening connection |
Screw torque |
Up to0.6Nm |
Explosion-proof parameters:
Maximum safety voltage (Um) |
250VAC/DC |
Maximum output voltage (Uo) |
11.5VDC |
Maximum output current (Io) |
16.8mA |
Maximum output power (Po) |
48.3W |
Maximum external inductance (Lo) |
50mH |
Maximum external capacitance (Co) |
0.8μF |
Certification/Standards:
CE certification |
in line with CE standards |
National Explosion-proof Electrical Product Quality Supervision and Inspection Center (CQST) certification |
[Ex ia Ga] IIC conforms to GB 3836.1, GB 3836.4, GB 3836.20 |
Product drawing / terminal wiring diagram: