Installation Manual
NetSure™ LMS Data Processing Unit
Installation Instructions, Section 5879 (Issue BA, April 7, 2014)
Spec. No: 58650500, 586505500 Code: Section 5879
Model No: LMS1000 Issue BA, April 7, 2014
[32 of 149]
when monitoring voltages, or a 49.9Ω fusible resistor when
monitoring shunts. The protection devices should be located as
near as possible to the voltage or current source to provide
maximum protection.
Recommended Maximum Analog Input Loop Lengths:
Shunt Inputs: maximum 2,000 ft. loop length.
Voltage Inputs: maximum 1,000 ft. loop length.
These maximum distances are derived from calculations which
would yield a typical 0.1% of full scale error at the maximum loop
length (using 22 gauge hook-up wire). Loop length is the sum of
the lengths of the positive and negative leads.
Note:
No error is introduced when using 0-20mA or 4-20mA current
loops less than 20,000 ft. Assumes transducer can drive 500
ohm impedance.
Procedure:
1. 586505000/586505500: To access terminal block TB1
located on an analog circuit card, rotate the two captive
fasteners on the front of the cabinet until the arrow on
the fastener points up or down, and pivot the door open.
or
582140000/582140001/582126100: Open the bay's
front door.
2. Connect the leads as shown in Figure 11. Ensure that the
jumper associated to each input is correctly set, as
previously described in this section. Connect to only one
pair of terminals provided for each input.
3.
586505000/586505500: If no more connections are to
be made inside the cabinet, close the cabinet door and
secure with the two captive fasteners (arrow on fastener
points towards outside of cabinet).
or
582140000/582140001/582126100: If no more
connections are to be made inside the bay, close the
bay's front door.
Figure 11. Connection to a Four Input Analog Circuit Card, P/N
506336
EIGHT INPUT ANALOG CiRCUIT CARD P/N 514528 CONNECTIONS
Connections to an analog circuit card are made to terminal block
TB1 located at the edge of the circuit card. Refer to "Making
Connections to an LMS1000 Input/Output (I/O) Circuit Card" in this
section for terminal block TB1 connection information. Refer to
Figure 12 for terminal block pinouts.
The eight input analog circuit card is designed with one pair of
terminals for each input. Only connect 50 mv shunt inputs to this
circuit card.
Note:
Common mode voltage between inputs must not exceed –
0.15 to +0.95 volts. The negative input to channel 1 serves as
the reference to all analog channels.
Recommended wire size is 20-22 gauge, twisted pair wire.
Observe correct polarity. Each of the two leads should be
protected using a 49.9Ω fusible resistor. The protection devices
should be located as near as possible to the voltage source to
provide maximum protection.
Recommended Maximum Analog Input Loop Lengths:
Shunt Inputs: maximum 2,000 ft. loop length.
These maximum distances are derived from calculations which
would yield a typical 0.1% of full scale error at the maximum loop
length (using 22 gauge twisted hook-up wire). Loop length is the
sum of the lengths of the positive and negative leads.
+
A2
A4
A1
A4
A3
A3
A1
A2
+
+
+
+
+
+
+
Analog input
wiring connection
terminals
LARGE SIGNAL
(0-60 volts DC)
(Refer to Figure 2-4 for proper jumper placement.)
LARGE SIGNAL
(0-60 volts DC)
(Refer to Figure 2-4 for proper jumper placement.)
SMALL SIGNAL
(50 mv shunts, 100 mv shunts, 20 ma current loops)
(Refer to Figure 2-4 for proper jumper placement.)
SMALL SIGNAL
(50 mv shunts, 100 mv shunts, 20 ma current loops)
(Refer to Figure 2-4 for proper jumper placement.)
LARGE SIGNAL
(0-60 volts DC)
(Refer to Figure 2-4 for proper jumper placement.)
SMALL SIGNAL
(50 mv shunts, 100 mv shunts, 20 ma current loops)
(Refer to Figure 2-4 for proper jumper placement.)
LARGE SIGNAL
(0-60 volts DC)
(Refer to Figure 2-4 for proper jumper placement.)
SMALL SIGNAL
(50 mv shunts, 100 mv shunts, 20 ma current loops)
(Refer to Figure 2-4 for proper jumper placement.)
Note:
Analog input designations A1 through A4 as shown are for
the circuit card only. The actual analog channel number
depends upon the quantity of analog and temperature
circuit cards installed and location of this analog circuit card
in the system network.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TB1
506336