YOKOGAWA ProSafe-RS Technical Information

2. Explosion Protection Instrumentation in Zone 2/Division 2
2-5
TI 32S01J30-01E
 Power Supply Wiring
The power cables for the safety control unit, safety node unit, unit for optical ESB bus repeater
module, and N-IO node must be wired from a non-hazardous area by using specied Division 2,
explosion-proof wiring such as conduit wiring.
In addition, do not apply stress on the both ends of the wiring cable.
The wiring should conform to the NEC (National Electrical Code: ANSI/NFPA-70), CEC
(Canadian Electrical Code) or wiring construction standards of the countries or regions where
wiring is laid.
The power cable of N-IO eld enclosure must be wired in accordance with the instructions
provided in the related GS (General Specications), TI (Installation Guidance) and IM (User’s
Manuals).
 Signal Wiring
Cables other than power cables should be explosion-proof wiring that is dened in NEC (National
Electrical Code: ANSI/NFPA-70), CEC (Canadian Electrical Code) or the wiring construction
standards of the countries or regions where wiring is laid. Please follow the procedure below.
• When, Vnet/IP cables, ESB bus cables or GPS connection cables are connected outside
the cabinet, use explosion-proof wiring.
• When eld wiring to I/O modules (including terminal blocks, terminal boards, etc.) is laid
outside the cabinet, use explosion-proof wiring.
• When an ALR111, ALR121, ALE111, S2LP131, S2EN402 or S2EN404 Communication
Module is connected, use explosion-proof wiring.
• The signal cable of N-IO eld enclosure must be wired in accordance with the instructions
provided in the related GS (General Specications), TI (Installation Guidance) and IM
(User’s Manuals).
IMPORTANT
(1) Attaching or removing a cable, a fuse or a card
In the system in operation, never attach or remove a cable, a fuse or a card in a explosive
atmosphere.
(2) Product maintenance
When product maintenance is carried out for the system in operation, never attach or
remove the product in a explosive atmosphere.
<English>
WARNING-EXPLOSION HAZARD-
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
<French>
AVERTISSEMENT-RISQUE D’EXPLOSION. NEPAS DE’BRANCHER TANT QUE LE
CIRCUIT EST SOUS TENSION, Á MOINS QU’IL NE S’AGISSE D’UN EMPLACEMENT
NON DANGEREUX.
Dec. 3, 2021-00

YOKOGAWA ProSafe-RS Specifications

General

Brand	YOKOGAWA
Model	ProSafe-RS
Category	Industrial Equipment
Language	English