3. Explosion Protection Instrumentation in Zone 2/Division 2
3-4
TI 33Q01J30-01E
Signal Wiring
Cables other than power cables should be wired to conform to all wiring shall comply with
Canadian Electrical Code Part I and Local Electrical Codes.
The following is special considerations.
• When AAP135 is used in a power supply mode, the cable (KS1) connected to AAP135 and
a field wiring need a conduit wiring.
• When a combination of ADV551 and AED5D or A1BD5D or that of ADV561 and AED5D or
A1BD5D is used in a voltage output mode, a field wiring connected to AED5D or A1BD5D
need a Division 2 wiring dedicated in potentially explosive atmospheres such as a conduit
wiring.
• For ALF111, use a barrier for a fieldbus as a field wiring terminal for NI. (Ex. Barrier KLD2-
PR-Ex1.IEC1)
• Use DC power supply compliant with the Standard for Explosion Protection for combination
of ADV151 and AED5D or A1BD5D, or that of ADV161 and AED5D or A1BD5D in contact
input mode and voltage input mode. Connection according to the parameters of this power
supply makes signal wiring outside of the cabinet compliant with the local standard. Please
read the instruction on contact input mode wiring and the instruction on voltage input mode
when you actually install wiring.
• The signal cable of N-IO field enclosure must be wired in accordance with the instructions
provided in the related GS (General Specifications), TI (Installation Guidance) and IM
(User’s Manuals).
Instruction on Contact Input Mode Wiring
When the number of channels is limited because power supply exceeds its capacity, but parallel
Dec .3, 2021-00
