Pickering 40-290-021, Руководство пользователя

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Page 4.4
PROGRAMMABLE RESISTOR MODULES 40-290/291
pickering
SECTION 4 - PROGRAMMING GUIDE
MODULE ARCHITECTURE 40-291-021
Four sub-units (one for each Chain) are used to control the module’s relays as shown below. Enabling a particular
bit closes the C to A signal path of that relay.
Chain Sub-Unit Bit
40-291-021 Signal Path
(with relay energised)
Associated
Resistor
PCB
Resistor
1
1 1 C1.1 to A1.1 R1 R17
1 2 C2.1 to A2.1 R2 R18
1 3 C3.1 to A3.1 R3 R19
1 4 C4.1 to A4.1 R4 R20
1 5 C5.1 to A5.1 R5 R21
1 6 C6.1 to A6.1 R6 R22
1 7 C7.1 to A7.1 R7 R23
1 8 C8.1 to A8.1 R8 R24
2
2 1 C1.2 to A1.2 R1 R25
2 2 C2.2 to A2.2 R2 R26
2 3 C3.2 to A3.2 R3 R27
2 4 C4.2 to A4.2 R4 R28
2 5 C5.2 to A5.2 R5 R29
2 6 C6.2 to A6.2 R6 R30
2 7 C7.2 to A7.2 R7 R31
2 8 C8.2 to A8.2 R8 R32
3
3 1 C1.3 to A1.3 R1 R33
3 2 C2.3 to A2.3 R2 R34
3 3 C3.3 to A3.3 R3 R35
3 4 C4.3 to A4.3 R4 R36
3 5 C5.3 to A5.3 R5 R37
3 6 C6.3 to A6.3 R6 R38
3 7 C7.3 to A7.3 R7 R39
3 8 C8.3 to A8.3 R8 R40
4
4 1 C1.4 to A1.4 R1 R41
4 2 C2.4 to A2.4 R2 R42
4 3 C3.4 to A3.4 R3 R43
4 4 C4.4 to A4.4 R4 R44
4 5 C5.4 to A5.4 R5 R45
4 6 C6.4 to A6.4 R6 R46
4 7 C7.4 to A7.4 R7 R47
4 8 C8.4 to A8.4 R8 R48
The 40-291-021 Module utilises 32 SPST relays. In the default state, all relay signal paths are open circuit and all
resistors are linked in the chains. Energising a particular relay creates a signal path between the C and A terminals
of the relay and short circuits the corresponding resistor. The relay module’s switching architecture is detailed in
Figure 2.3. Relay connections are as shown below.
A C
Relay Connections