Ser
ies
651T
/652T
/653T
Is
olator
Us
er
’s
Manual Pr
oc
es
s
Cur
rent T
w
o-
W
ire T
rans
m
itter
s
___________________________________________________________________________________________
- 7
-
12
11
14
OUT+
13
15
+
OUT-
+
ISOLATED INPUT
SCREW TERMINAL NUMBER
4-20mA
IN-
ISOLATED INPUT
40 TO 200mV
(4 TO 20mA)
651T/652T
653T
0.1%
R-LOAD
ISOLATED
CHANNEL 1
ISOLATED OUTPUT
CURRENT
12-36V DC
OPTIONAL CURRENT
SENSE CONNECTION
ZERO AND SPAN ADJUST
ISOLATED OUTPUT
Z
S
16
SNS
IN1
IN2
2
OUT2
1
NC
IN+
CURRENT
MIRROR
CURRENT
STEERING
CIRCUIT
CURRENT
SOURCE
TRANSIENT
VOLTAGE
SUPPRESSION
VOLTAGE
SUPPLY
ZERO/SPAN
CIRCUIT
10 OHM
1
(651T/652T)
OUT1
IN1
OUT1
OUT2
INPUT
FILTERING
SCREW TERMINAL NUMBER
OSCILLATOR
ISOLATED
CHANNEL 2
(652T)
SINGLE ISOLATED INPUT,
TWO ISOLATED OUTPUTS
(653T)
4501-726B
ISOLATED CHANNEL 1
651T IS ISOLATED FROM INPUT TO
OUTPUT.
652T CHANNELS ARE INDEPENDENT
AND ISOLATED FROM INPUT TO
OUTPUT AND CHANNEL TO CHANNEL
653T INPUT IS ISOLATED FROM INPUT
TO OUTPUT AND OUTPUT TO OUTPUT.
XFMR
CURRENT
CONTROL
ADJUST
CURRENT
CONTROL
TRANSIENT
VOLTAGE
SUPPRESSION
SERIES 651T & 652T SIMPLIFIED SCHEMATIC
(ONLY ISOLATION CHANNEL 1 SHOWN)
651T UNITS HAVE A SINGLE ISOLATED CHANNEL EXACTLY AS SHOWN.
652T UNITS HAVE TWO INDEPENDENT ISOLATED CHANNELS, EACH AS SHOWN.
653T UNITS COMBINE ONE INPUT CHANNEL WITH TWO INDEPENDENT
AND ISOLATED OUTPUT CHANNELS, SIMILAR TO CIRCUIT SHOWN.
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