<2. Notes on Handling>
2-9
IM 01W03D02-01EN
Yokogawa Electric Corporation
Model
FN510, FN310 (Modbus)
Title
Control drawing of FN310 (FN310-xx-M, US / Canada)
No.
IFM045-A83
Page
2
Revision
1
Notes:
1. As allowable connection values of an Intrinsically Safe Apparatus (2),
the following conditions of (a) or (b) must be satisfied.
(a) {( Li × 100 ≤ Lo) or (Ci × 100 ≤ Co)} and {Li ≤ (Lo - Lcable) and Ci ≤ (Co - Ccable)}
(b) { Li ≤ (Lo / 2 - Lcable) and Ci ≤ (Co / 2 - Ccable)} and
[{(Ci + Ccable) ≤ 600 nF for Group IIC} or {(Ci + Ccable) ≤ 1 μF for Group IIA, IIB}]
2. (For US) No revision to this drawing without prior approval of FM.
3. (For US) Installation must be in accordance with the National Electrical Code (NFPA 70),
ANSI/ISA-RP12.06.01, and relevant local codes.
4. (For Canada) Installation must be in accordance with the Canadian Electrical Code Part I (C22.1),
ANSI/ISA-RP12.06.01, and relevant local codes.
5. (For US) IS Apparatus (or Associated Apparatus) must be FM approved.
6. Control equipment connected to IS Apparatus (or Associated Apparatus) must not use or
generate a voltage more than Um of the control equipment.
7. The equipment satisfies the requirements for IP66 and Type 4X only when it is connected to a
connector JR13WPI-5P (Hirose Electric) and tightened with a torque of 1.2-2.0 Nꞏm. Appropriate
type of plug must be used in accordance with the instructions.
8. The control drawing of IS Apparatus (or Associated Apparatus) must be followed when installing
the equipment.
