DayTronic 3500 Series, Instruction Manual

Page: 21 / 122

d. When wiring a variable reluctance transducer to the 3530, you must install a
10-kilohm "half-bridge completion" resistor between the –SIGNAL line and
each of the two EXCITATION lines, as shown in Figs. 7(c) and 7(d).
2.3
S
ETUP
: C
ONNECTIONS AND
P
OWERUP
2
2.a T
RANSDUCER
C
ONNECTIONS
: M
ODEL
3530
Fig. 7(b) Model 3530
Transducer Cabling:
7-Wire LVDT Cabling
(20 ft. or longer)
–
SIG
+
SIG
CNTR
WIRE
+
SENS
+
EX
LVDT INPUT
–
EX
–
SENS
HI –
SIG
HI +
SIG
–SENSE +SENSE
+EXCITATION
+SIGNAL
–EXCITATION
–SIGNAL
10K
10K
N/C
SHIELD
SHLD N/C
Fig. 7(c) Model 3530
Transducer Cabling:
3-Wire Variable
Reluctance Cabling
(under 20 ft. in length)
–
SIG
+
SIG
CNTR
WIRE
+
SENS
+
EX
LVDT INPUT
–
EX
–
SENS
HI +
SIG
–SENSE +SENSE
–EXCITATION
+EXCITATION
+SIGNAL
–SIGNAL
PRIMARY
COIL
SECONDARY
COILS
Sec. 1
Sec. 2
CENTER
WIRE
HI –
SIG
N/C
SHIELD
SHLD N/C
For
Long-Stroke
LVDT's
Fig. 7(a) Model 3530
Transducer Cabling:
5-Wire LVDT Cabling
(under 20 ft. in length)
–
SIG
+
SIG
CNTR
WIRE
+
SENS
+
EX
LVDT INPUT
–
EX
–
SENS
HI –
SIG
HI +
SIG
–SENSE
+SENSE
–EXCITATION
+EXCITATION
–SIGNAL
PRIMARY
COIL
Sec. 1
Sec. 2
CENTER
WIRE
For
Long-Stroke
LVDT's
SECONDARY
COILS
+SIGNAL
N/C
SHIELD
SHLD N/C