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NPEXA-K511

Digital input isolated barrier, it converts switch or proximity detector signals (dry contact or NAMUR) from a hazardous area into relay signals to a safe area by isolation. Operation mode, output 2 function and the input circuit fault detection function can be set with the DIP switch. The input, output, and power supply are galvanically isolated from each other.
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Input signal

Output signal

Channels

Power Supply Mode

LFD

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NPEXA-K511

¡¾Core technology¡¿

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¡¾Installation and disposal¡¿



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Installation                                               Disposal 




¡¾Technical data¡¿ Supply Input Output General parameters EMC data Operating conditions State ¡¾Mechanical specifications¡¿ Mechanical specifications ¡¾Certified data¡¿ Certified data
Supply
Power supply 20 ~ 30 V DC
Input
Input signal Dry contact or NAMUR
Output
Output signal Relay contact
Load capacity 250VAC/2A, 30VDC/2A
General parameters
Switching trigger point Input signal > 2.1mA, signal ¡°1¡±, the yellow LED is always bright£»£»£»£»£»£»£» Input signal < 1.2m¦¡, signal ¡°0¡±, the yellow LED goes out
Relay mechanical life > 100000 switching cycles
Switch frequency £¼ 10 Hz
DIP switch settings S1¡úa£ºoutput1 normal mode£»£»£»£»£»£»£»S1¡úb£ºinverted mode£»£»£»£»£»£»£»S2¡úa£ºLFD on£»£»£»£»£»£»£»S2¡úb£ºLFD off£»£»£»£»£»£»£»S3¡úa£ºoutput2 normal mode£»£»£»£»£»£»£»S3¡úb£ºfault signal output
Energized/De-energized delay £¼ 20 ms
Power dissipation 1 W
EMC data
Electromagnetic compatibility IEC 61326-3-1
Dielectric strength ¡Ý 3000V AC (intrinsically safe side / non-intrinsically safe side) ¡Ý 1500V AC (Power supply /non-intrinsically safe side)
Insulation resistance ¡Ý 100 M¦¸ (Input /Output/Power supply)
Operating conditions
Operation temperature -40 ¡æ ~ +70 ¡æ
Storage temperature -40 ¡æ ~ +80 ¡æ
Suitable location Mounting in safe area, and connected to the intrinsic safety apparatus in hazardous area zone 0, zone 1, zone 2, ?, ¢òA, ¢òB, ¢òC, ¢óC, T4 ~ T6. When the apparatus used in zone 2, please comply with the special conditions of use in the instructions.
State
LFD function When input current ¡Ü 50¦ÌA, considers the input line breakdown, the output relay de-energized. If input current ¡Ý 6.5mA, considers the input circuit short-circuit, the output relay de-energized, the indicator red flashing
Safe state de-energized
Mechanical specifications
Connection method Screw connection
Dimension 12.8mm (W) ¡Á 110mm (H) ¡Á 117mm (D)
Mounting type DIN35 mm
Certified data
Product approvals ATEX, IECEx, SIL, CCC
Type of equipment Type A
Hardware fault margin(HFT) 0
Mode of demand low/high
Safety integrity level(SIL) SIL2
¦ËS (1 FIT=10-9/h) 451.954 FIT
¦ËDU (1 FIT=10-9/h) 5.192 FIT
¦ËDD (1 FIT=10-9/h) 8.511 FIT
¦ËTOTAL (1 FIT=10-9/h) 465.657 FIT
SFF £¾ 60%
PFDavg(T1=1Y) 2.27E-05
PFH 5.19E-09 1/h
Ex marking [Ex ia Ga]¢òC[Ex ia Ma] ¢ñ¡¢[Ex ia Ga] ¢òC¡¢[Ex ia Da] ¢óC¡¢Ex ec nC [ia Ga] ¢òC T4 Gc
Um 250 V
Uo 10.5 V (Terminals 1, 2)
Io 11.3 mA (Terminals 1, 2)
Po 29.7 mW (Terminals 1, 2)
Co (?C) 0.644 ¦ÌF (Terminals 1, 2)
Lo (?C) 37.33 mH (Terminals 1, 2)
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NPPB-DIN Bus rail power supply
35mm standard rail
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NPPB-BS210 I/O terminal base
Connect the rail BUS base, external power is introduced through the terminal block of the base. If a redundant power module is selected, this terminal can be left unselected.
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NPPB-BSC028 Dust cover
Protect the exposed bus and split the combination as needed.
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NPPB-SS5 Limiter
For fixed position, standard 2 sets
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NPPB-TS35B Fixed piece
Material: metal iron, used for rail load-bearing reinforcement, standard 2 pieces
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