Equipment Identification
Controller Components
I/O modules
Eleven different module types can be installed in the controller to support both analog and digital inputs and outputs of various types and signal levels. The signal type and I/O capacity for each module type is indicated in Table 1.
Table 1 Controller plug-in I/O module types
Module Type
Universal Analog Inputs (AI)
Analog Outputs (AO)
Digital Inputs (DI) - 4 types:
AC
DC
Logic
16 point
Digital Outputs (DO) - 4 types:
AC
AC
High current outputs
DC
Relay
Pulse Input/Frequency Input
pH Power Module
Signal Types
mV, V, mA, T/C, RTD, Ohms
0 mA to 20 mA
100/240 Vac
24 Vdc
Dry contacts (5 mA - 5 Vdc)
Dry contacts
100/240 Vac
100/240 Vac With:
2 outputs rated @ 2 A
4 outputs rated @ 0.5 A
24 Vdc
SPST normally open (NO) or normally closed (NC) contact. (User configurable)
24Vdc
± 15 Vdc
Maximum
I/O
64
16
96
96
96
48
96
12
96
60
64
8
I/O per
card
4
4
6
6
6
16
6
2
6
6
4
4
Maximum no.
of cards
16
4
16
16
16
3
16
12
16
10
16
2
NOTE: Total combined digital I/O is 96 points.
Control architecture
The UMC800 uses a function block configuration architecture to develop control strategies for both analog and digital operations. A function block may represent a physical input or output, a group of physical inputs or outputs, an internal calculation, or an internal function such as a PID algorithm. More than 70 standard UMC800 function block algorithm types are available for configuring analog and logic functions. Typically, a function block algorithm type may be used any number of times up to the limit of 250 blocks. Some of these with specific limitations are:
•Control loops (i.e., PID, ON/OFF, TPSC, and Carbon
•Setpoint programmer and associated support
•Setpoint Scheduler and associated support
•Time proportioning output
•Pushbutton
•4 Selector Switch
•Modbus Slave
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