ES-787 Rev E
Page 5 of 6
6
IN T R IN S ICAL L Y S AFEIN S T AL L AT IO N W IR IN G R EQ U IR EM EN T S
Each intrinsically safe cable must include a grounded shield or be run in a separate metal conduit.
H A ZA RD O US L O C A TIO N
S E E 7 .1-7.6
E qu i-P otential
1
2
4
3
S hu ntZ enerD iod e S afety
B arrier-C ontrollerO u tpu t
Type
C able S hield
(“S tand -A lone”C onfigu ration)
(W /Field D evice C onfigu ration)
In
+
-
Field D evice L im its cu rrent,
voltage and power
4-20 m A S et
P ointfrom
D C S
VDD+
VDD-
S ig
SVI
TM
-II REMOTE
POSITION SENSOR
Intrinsically safe
power supply and
monitoring system
Entity Parameters:
Ui/Vmax=6.5Volts, Ii/Imax=10.5mA,
Ci=0.066µF, Li=0, Pi=68mW
Si
g
V-
V
+
VDD+
VDD-
S ig
N O N -H A Z A RD O US L O C A TIO N -UNS P E C IFIE D E X C E P T TH A T
B A RRIE RS M US T NO T B E SUP P L IE D FRO M N O R C O N TA IN
UN D E R N O RM A L O R A B N O RM A L C O N D ITIO N S A SO URC E O F
P O TE NTIA L W ITH RE S P E C T TO E A RTH IN E X C E SS O F 250
V O L TS RM S O R 250 V O L TS D C
Si
g
V-
V
+
Entity Parameters:
Ui/Vmax=6.5Volts, Ii/
Imax=10.5mA,
Ci=0.066µF, Li=0,
Pi=68mW
SVI
TM
-II REMOTE
POSITION
SENSOR
FI
EL
D
D
EV
IC
E
H A ZA RD O US L O C A TIO N
S E E 7 .1-7.6
N O N -H A ZA RD O US L O C A TIO N -UN S P E C IFIE D E X C E P T TH A T
B A RRIE RS M US T N O T B E S UP P L IE D FRO M N O R C O N TA IN
UN D E R N O RM A L O R A B N O RM A L C O N D ITIO N S A S O URC E O F
P O TE N TIA L W ITH RE S P E C T TO E A RTH IN E X C E S S O F 250
V O L TS RM S O R 250 V O L TS D C
(“S tand -A lone”C onfigu ration)
S VI
T M
-IIR EM O T E
P O S IT IO N S EN S O R
Entity Parameters:
Ui/Vmax=6.5Volts, Ii/Imax=10.5mA,
Ci=0.066μF, Li=0, Pi=68mW
Intrinsically safepow er
supply andm onitoring
system
VDD+
Sig
VDD-
VDD+
Sig
VDD-
(W /Field D evice C onfigu ration)
C able S hield
S VI
T M
-IIR EM O T E
P O S IT IO N S EN S O R
Entity Parameters:
Ui/Vmax=6.5Volts, Ii/
Imax=10.5mA,
Ci=0.066μF, Li=0,
Pi=68mW
F
IE
LD
D
E
V
IC
E
Field D evice L imits cu rrent,
voltage and power
4-20 m A S et
P ointfrom D C S
S hu ntZenerD iode S afety
B arrier-C ontrollerO u tpu t
Type
E qu i-P otential
In
S
ig
S
ig