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WARNING : DO NOT ATTEMPT TO CONNECT
AN AMMETER BETWEEN A "TEST" TERMINAL AND
A "COMM" TERMINAL. THE RESULT TO THE POWER
SUPPLY IS A SHORT WHICH WILL BLOW FUSES
AND POSSIBLY DAMAGE YOUR EQUIPMENT, ALSO
CAUSING TO INTERRUPT FUNCTION OF OTHER
DEVICES POWERED FROM SAME SUPPLY.
Internal ground
termination point
Model 691HT Communicator may be
connected at any wiring termination
point in the loop, providing the minimum
resistance is 250 ohm.
If this is less than 250 ohm, additional
resistance should be added to allow
communications.
An optional terminal block
is available for the
connection of a remote
indicator.
- 14 -
External ground
termination point
-
+
Test points
4-20 mA
Fig. 8b - Electrical connections
Internal ground
termination point
-
REMOTE
METER
+
-
+
Test points
4-20 mA
Fig. 8c - Optional terminal block
for remote indicator
. . . ELECTRICAL CONNECTIONS
NOTE : If the use of the Hand Held Communicator
is foreseen, resistance of 250 ohms minimum must be
included in the current loop, between the power supply
and the connection point of the Hand Held Terminal for
communication purpose.
-
Line load
+
250 ohm min
GND
691HT
F1
F2
F3
F4
PV
SERIAL
REVIEW
CONF
LINK
TRIM
A B C
D E F
G H I
1
2
3
J K L
M N O
P Q R
4
5
6
Hand-held
S T U
V W X
Y Z #
7
8
9
communicator
+
@ %
& /
-
0
Remote
indicator
7
%
Kent-Taylor
Line load
250 ohm min
GND
691HT
F1
F2
F3
F4
PV
SERIAL
REVIEW
CONF
LINK
TRIM
A B C
D E F
G H I
1
2
3
J K L
M N O
P Q R
4
5
6
Hand-held
S T U
V W X
Y Z #
communicator
7
8
9
@ %
& /
+
0
-
+
+
Power
source
-
-
Optional
ground
Receiver
+
+
Power
source
-
-
Optional
Receiver
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