model 2704 controller installation and operation handbook - Soliton

Standard IO
2704 Controller
17. Chapter 17 Standard IO
17.1. WHAT IS STANDARD IO?
Standard IO refers to the fixed Input/Output connections as listed in Table 17-1 below.
Parameters such as input/output limits, filter times and scaling of the IO can be adjusted in
the Standard IO pages.
1. Scale the controller to your reference standards
2. Match the calibration of the controller to an individual transducer or sensor
3. To compensate for known offsets in process measurements
These offsets can be made to parameters in the Standard IO pages.
STANDARD IO
(PV Input
Page)
(An Input
Page)
(AA Relay
Page)
(Dig IO1
Page)
to
(Dig IO7
Page)
(Diagnostic
Page)
Allows access to parameters which set up the fixed
Process Variable Input connected to terminals VH,
VI, V+ and V-. This is, generally, the PV input for a
single loop controller.
Allows access to parameters which set up the fixed
Analogue Input connected to terminals BA, BB and
BC. This is the high level input from a remote
source.
Allows access to parameters which set up the fixed
Relay output connected to terminals AA, AB and
AC. This relay may be used as an alarm relay. a
time proportioning control output or valve
raise/lower..
Allows access to parameters which set up the fixed
digital IO connected to terminals D1 to D7 and DC.
Allows access to parameters which set up the fixed
digital Input connected to terminal D8 and DC.
This chapter also describes User Scaling of the standard IO.
The controller is calibrated for life against known reference standards during manufacture,
but user scaling allows you to offset the ‘permanent’ factory calibration to either:-
Note:-
Names shown in italics can be customised.
Table 17-1: Standard I/O
17-2 Installation and Operation Handbook. Part No HA026502 Issue 1.0 Apr-00