MEB Options
4-DI MEB
With the optional 4-DI MEB installed, the flow computer provides four
discrete inputs for customer input devices such as reed relays, uncommitted
transistor outputs, and other devices that are DC-resistive in nature. Up to
six boards may be installed in the unit.
A unique address that determines the software configuration must be set
using jumpers J1 through J3 for each 4-DI MEB installed. The address
jumpers are configured as shown in the table below.
Table 4–7. Address jumper configuration for 4-DI MEB
Board #
J3
J2
J1
1
Not installed
Not installed
Not installed
2
Not installed
Not installed
Installed
3
Not installed
Installed
Not installed
4
Not installed
Installed
Installed
5
Installed
Not installed
Not installed
6
Installed
Not installed
Installed
After installing the MEB according to
earlier in this chapter,
connect TB1 on the 4-DI MEB to the MEB terminal block (TB2) on the
enclosure door panel as shown below.
Table 4–8. 4-DI MEB to TB2 connections
Color
TB1 on 4-DI MEB
TB2 on Enclosure Door
Blue
TB1-2 (+5V)
TB2-3 (VCC)
Yellow
TB1-3 (SDA)
TB2-4 (SDA)
White
TB1-4 (SCL)
TB2-5 (SCL)
The discrete inputs are identified in the following table. Refer to
for typical discrete input wiring (see
diagram).
Table 4–9. Discrete inputs on the 4-DI MEB
Input
SIG
GND
DI1
TB2-2
TB2-3
DI2
TB2-4
TB2-5
DI3
TB2-6
TB2-7
DI4
TB2-8
TB2-9
4-DI MEB
Address Jumpers
Connection to MEB
Terminal Block
Discrete Inputs
Thermo Fisher Scientific
AutoPILOT PRO Flow Computer User Guide 4-11
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