User`s manual

Configuring the Relay Multiplexer Modules 19Chapter 2
Chapter 2
Configuring the Relay Multiplexer Modules
This chapter shows how to connect external wiring to the 16-Channel Relay
Multiplexer Modules, and how to configure them:
• Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 19
• Connecting Field Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
• Wiring a Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
• Connecting the Analog Bus . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
• Setting the Card ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
• Setting the Logical Address Switch . . . . . . . . . . . . . . . . . . . Page 23
• Using the Multiplexer Module with an Agilent Mainframe or
Command Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 24
• Selecting the Interrupt Priority . . . . . . . . . . . . . . . . . . . . . . . Page 26
• 5 Volt Excitation for Strain Gages . . . . . . . . . . . . . . . . . . . . Page 27
• Adding Signal Conditioning Components/Current Shunts. . Page 27
• Connecting User Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 29
Warnings and Cautions
WARNING SHOCK HAZARD. Only service-trained personnel who are aware of
the hazards involved should install, remove, or configure the
modules. Before installing any module, disconnect AC power from
the mainframe and from user wiring.
To prevent electrical shock, all wires to the channel connections must
be insulated to at least 120 Vrms (170 V peak).
Caution MAXIMUM VOLTAGE/CURRENT. Maximum voltage that may be
applied between High (H), Low (L), and Guard (G) terminals is 170 V
dc or 120 V rms (170 V peak) for the E1345A/47A or 250 V dc or AC
RMS (354 V peak) for the E1343A/44A. Maximum current is 50mA
(non-conductive) per channel.
STATIC ELECTRICITY. Static electricity is a major cause of
component failure. To prevent damage to the electrical components
in the multiplexer module, observe anti-static techniques whenever
removing a module from the mainframe or whenever working on a
module.