Loop Schematics For 3661 Positioners - Fisher 3660 Instruction Manual

3660 and 3661 Positioners
September 2015

Loop Schematics for 3661 Positioners

This section includes loop schematics required for wiring of intrinsically safe installations. If you have any questions,
contact your Emerson Process Management sales
Figure 27. CSA Loop Schematic for Fisher 3661 Positioner (Drawing GE28591)
NOTES:
1. BARRIERS MUST BE CSA CERTIFIED WITH ENTITY PARAMETERS
AND ARE TO BE INSTALLED IN ACCORDANCE WITH THE
MANUFACTURERS I.S. INSTALLATION INSTRUCTIONS.
2. EQUIPMENT SHALL BE INSTALLED IN ACCORDANCE WITH
THE CANADIAN ELECTRICAL CODE, PART I.
3. FOR ENTITY INSTALLATION (I.S. AND NI): Vmax > Voc, Imax > Isc,
Ci + Ccable < Ca, Li + Lcable < La.
GE28591‐A
42
office.
HAZARDOUS LOCATION
INTRINSIC SAFETY
CLASS I, II, III, DIV 1, GROUPS A,B,C,D,E,F,G
NON-INCENDIVE
CLASS I, DIV 2, GROUPS A,B,C,D
FISHER TYPE: 3661
Vmax = 30 VDC
Imax = 150 mA
Ci = 0 nF
Li = 0 mH
Pi = 1.25 W
Instruction Manual
D101402X012
NON-HAZARDOUS LOCATION
CSA APPROVED BARRIER