Chapter 2. Field Wiring; About This Chapter; Planning Your Wiring Layout; Scp Positions And Channel Numbers - HP E1419A User Manual

About This Chapter

Planning Your Wiring Layout

SCP Positions and
Channel Numbers
Chapter 2
This chapter shows how to plan and connect field wiring to the HP E1419's
Terminal Module. The chapter explains proper connection of analog signals
to the HP E1419, both two-wire voltage type and four-wire resistance type
measurements. Connections for other measurement types (e.g., strain using
the Bridge Completion SCPs) refer to specific SCP manual in the "SCP
Manuals" section. Chapter contents include:
•
Planning Wiring Layout for the HP E1419 . . . . . . . . . . . . . . 23
•
Faceplate Connector Pin-Signal List . . . . . . . . . . . . . . . . . . . 27
•
Optional Terminal Modules . . . . . . . . . . . . . . . . . . . . . . . . . . 28
•
Reference Temperature Sensing with the HP E1419 . . . . . . 31
•
Configuring the On-Board/Remote Reference Jumpers . . . . 32
•
Preferred Measurement Connections. . . . . . . . . . . . . . . . . . . 35
•
Wiring and Attaching the Terminal Modules . . . . . . . . . . . . 41
•
Attaching/Removing the Terminal Modules . . . . . . . . . . . . . 43
•
Adding Components to the Option 12 Terminal Module . . . 44
•
Option 11 Terminal Module Wiring Map . . . . . . . . . . . . . . . 42
•
Option 12 Terminal Module Wiring Map . . . . . . . . . . . . . . . 43
•
The Option A3F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
To help you plan field wiring connections to your HP E1419A this section
will provide you with a high-level overview of the HP E1419A's signal
paths between the face plate connectors and the Control Processor (DSP).
To eliminate any surprises after your system is wired, we will also cover
any configuration interdependencies or other limiting situations (there are
very few with the HP E1419A).
The HP E1419A has a fixed relationship between Signal Conditioning
Plug-on positions and their channel assignments. See Figure 2-1 for this
discussion. Each of the eight SCP positions can connect to eight channels.
Each channel signal path consists of both a High and Low signal path (for
differential analog signals). Some SCP models will connect to fewer of
these eight channels and those left unconnected cannot be used for other
purposes. The HP E1533 Digital I/O SCP on the other hand will use each
High and Low channel to provide 16 digital bits from a single SCP position.
Chapter 2
Field Wiring
Field Wiring 23