Zener Barrier Z778
- 2-channel
- DC version, positive polarity
- Working voltage 26.5 V at 10 µA
- Series resistance max. 646 Ω
- Fuse rating 50 mA
- DIN rail mounting
Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH, also apply to Pepperl+Fuchs AG.
Download the complete datasheet as a PDF:
Datasheet excerpt: Technical data of Z778
| General specifications | ||
|---|---|---|
| Type | DC version, positive polarity | |
| Electrical specifications | ||
| Nominal resistance | 600 Ω | |
| Series resistance | max. 646 Ω | |
| Fuse rating | 50 mA | |
| Hazardous area connection | ||
| Connection | terminals 1, 2; 3, 4 | |
| Safe area connection | ||
| Connection | terminals 5, 6; 7, 8 | |
| Working voltage | ||
| Supply loop | max. 27 V | |
| Measurement loop | max. 26.5 V at 10 µA | |
| Conformity | ||
| Degree of protection | IEC 60529 | |
| Ambient conditions | ||
| Ambient temperature | -20 ... 60 °C (-4 ... 140 °F) | |
| Storage temperature | -25 ... 70 °C (-13 ... 158 °F) | |
| Relative humidity | max. 75 % , without condensation | |
| Mechanical specifications | ||
| Degree of protection | IP20 | |
| Connection | screw terminals | |
| Core cross-section | max. 2 x 2.5 ... mm2 | |
| Mass | approx. 150 g | |
| Dimensions | 12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 inch) | |
| Construction type | modular terminal housing , see system description | |
| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 | |
| Data for application in connection with hazardous areas | ||
| EU-type examination certificate | BAS 01 ATEX 7005 | |
| Marking |  II (1)GD, I (M1) [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I (-20 °C ≤ Tamb ≤ 60 °C) [circuit(s) in zone 0/1/2] |
|
| Voltage | 28 V | |
| Current | 46 mA | |
| Power | 320 mW | |
| Supply | ||
| Maximum safe voltage | 250 V | |
| Series resistance | min. 607 Ω | |
| Certificate | TÜV 99 ATEX 1484 X | |
| Marking | II 3G Ex nA IIC T4 Gc [device in zone 2] |
|
| Directive conformity | ||
| Directive 2014/34/EU | EN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010 | |
| International approvals | ||
| FM approval | ||
| Control drawing | 116-0118 | |
| UL approval | ||
| Control drawing | 116-0139 (cULus) | |
| IECEx approval | IECEx BAS 09.0142 IECEx BAS 17.0091X |
|
| Approved for | [Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I Ex ec IIC T4 Gc |
|
| General information | ||
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. | |
Documents: Z778
| Manuals | Language | File Type | File Size |
|---|---|---|---|
| Manual Zener Barriers Z-System | ENG | 1203 KB | |
| Handbuch Zenerbarrieren Z-System | GER | 1203 KB | |
| Instruction manuals | |||
| Инструкции | BUL | 0 KB | |
| Návod k poużití | CZE | 197 KB | |
| Instruktions manual | DAN | 195 KB | |
| Instruction manual | ENG | 68 KB | |
| Kasutusjuhend | EST | 190 KB | |
| Käyttöohje | FIN | 191 KB | |
| Manuel d'instructions | FRA | 136 KB | |
| Betriebsanleitung | GER | 69 KB | |
| Οδηγίες χρήσης | GRE | 0 KB | |
| Handleiding | HOL | 0 KB | |
| Instruction manual / Betriebsanleitung | HRV | 194 KB | |
| Használati útmutató | HUN | 0 KB | |
| Manuale di istruzioni | ITA | 65 KB | |
| Lietošanas pamācība | LAV | 0 KB | |
| Instrukciju vadovas | LIT | 195 KB | |
| Instrukcja obsługi | POL | 138 KB | |
| Manual de instruções | POR | 197 KB | |
| Manual de utilizare | RON | 196 KB | |
| Návod na poużitie | SLK | 196 KB | |
| Navodila za uporabo | SLV | 194 KB | |
| Manual de instrucciones | SPA | 133 KB | |
| Manual | SWE | 192 KB | |
CAD+CAE: Z778
| CAD | File Type | File Size | |
|---|---|---|---|
| CAD Portal / CAD Portal | LINK | --- | |
| Dimension drawing 2-D (DXF) / Abmessungszeichnung 2-D (DXF) | ZIP | 138 KB | |
| Dimension drawing 3-D in IGS format / Abmessungszeichnung 3-D im IGS-Format | IGS | 2406 KB | |
| Dimension drawing 3-D in STP format / Abmessungszeichnung 3-D im STP-Format | STP | 951 KB | |
| EPLAN | |||
| EPLAN Data Portal / EPLAN Data Portal | LINK | --- | |
| ePLAN macros Z-System devices (EMA) / ePLAN-Makros Geräte Z-System (EMA) | ZIP | 2338 KB | |
| Prolist | |||
| Prolist device specification / Prolist Gerätespezifikation | XML | 33 KB | |
Approvals+Certificates: Z778
Function: Z778
The Zener Barrier prevents the transfer of unacceptably high energy from the safe area into the hazardous area.
The zener diodes in the Zener Barrier are connected in the reverse direction. The breakdown voltage of the diodes is not exceeded in normal operation. If this voltage is exceeded, due to a fault in the safe area, the diodes start to conduct, causing the fuse to blow. The Zener Barrier has a positive polarity, i. e. the anodes of the zener diodes are grounded.
Depending on the application, increased or decreased intrinsic safety parameters apply for serial or parallel connection. For the detailed parameters refer to the Zener Barrier certificate. Application examples can be found in the system description of the Zener Barriers.
Pepperl+Fuchs AG
Lilienthalstraße 200
68307 Mannheim
Germany
info@de.pepperl-fuchs.com
+49 621 776-0
Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,200 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified.