ST-72 User's Manual
Document: UM-1007
Revision Level A
61
R-C-A are from Bridge type sensors. 4-20mA
may be applied to any channel's C&A
terminals by addition of 100 ohm resistor
(R1-R16) and setting LEL/4-20mA jumper to
4-20mA.
100 ohm
Res. Sockets
Disconnect power
before removing
or installing
modules.
Up to 8, 10-0192
Dual Bridge input
modules may be
installed.
LEDs indicate board
configuration.
SENSOR VOLTS
ADJUST
ANA
LEL Sensor
.4-2.0 VDC
BALANCE
ADJUST
GAIN
JUMPER
SENSOR VOLTS
ADJUST
BALANCE
ADJUST
GAIN
JUMPER
CH.1 - CH.16
Dual Channel Bridge input
modules plug into sockets on main
terminal board. Not required for
4-20mA channels.
REF
#10-0192
J3 & J4 are interchangeable I2C connectors
used to add other option PCB assemblies to
the controller.
.4-2.0 VDC
Figure 3-4
3.2.5
OPTIONAL 4-20mA ANALOG OUTPUT BOARD #10-0348
An optional 16 bit 4-20mA analog output board, shown in Figure 3-5, may be connected
to the I
2
C bus. Each channel’s output will transmit 4mA for 0% readings and 20mA for
100% readings. Loop drive capability depends upon the level of the ST-72’s primary DC
power supply. With at least 20 volts DC primary power they are capable of driving
20mA through a 750 ohm load. Outputs are self powered and DC power should not be
provided by the receiving device. Note: This board requires nominal 24VDC power be
connected to TB3 or TB4 terminals as shown in Figure 3-5. Since the board has 16
channels, four are required for 64 channel applications.
Содержание ST-72
Страница 106: ...ST 72 User s Manual Document UM 1007 Revision Level A 100...
Страница 108: ...ST 72 User s Manual Document UM 1007 Revision Level A 102 Figure 6 4...
Страница 127: ...ST 72 User s Manual Document UM 1007 Revision Level A 121 8 5 2 CHANNEL CONFIGURATION Figure 8 6...
Страница 128: ...ST 72 User s Manual Document UM 1007 Revision Level A 122 8 5 3 COPY CHANNELS Figure 8 7...
Страница 129: ...ST 72 User s Manual Document UM 1007 Revision Level A 123 8 5 4 PROGRAMMABLE RELAYS Figure 8 8...
Страница 130: ...ST 72 User s Manual Document UM 1007 Revision Level A 124 8 5 5 SYSTEM CONFIGURATION Figure 8 9...