model 2704 controller installation and operation handbook - Soliton

2704 Controller Installation
2.4.2. I/O Modules
The 2704 controller contains five positions in which 4-terminal I/O modules can be fitted.
These positions are marked Module 1, Module 3, Module 4, Module 5, Module 6, in Figure
2-3. Module 2 is reserved for the Memory Module which can only be fitted in this position.
To find out which modules are fitted check the ordering code which is found on a label on the
side of the instrument.
Any module, listed in this section, can be fitted in any position, except the PV input which is
limited to positions 3 and 6 only. Care should be taken, therefore, to ensure that modules are
fitted as expected from the order code. The instrument can be interrogated in ‘View Config’
level to locate the positions in which the modules are fitted. See Chapter 4, Access Levels. If
modules have been added, removed or changed it is recommended that this is recorded on the
instrument code label.
I/O Module
2A, 264Vac
max
1mA 1V min
Typical
usage
Heating,
cooling,
alarm,
program
event,
valve raise,
valve lower
H/W
Code
Connections and examples of use
Note: The order code and terminal number is pre-fixed by the module number.
Module 1 is connected to terminals 1A, 1B, 1C, 1D; module 3 to 3A, 3B, 3C, 3D, etc.
First relay
Contactor
Relay (2 pin)
R2
Relay
A
and
and
Panel lamp
Dual Relay
RR
etc
B
Contactor
Relay
Panel lamp
etc
Voltage
supply
C
D
Second relay
(dual relay only)
Change Over
Relay
(2A, 264Vac
max)
Heating,
cooling,
alarm,
program
event, valve
raise, valve
lower
R4
Contactor
Relay
Panel lamp
etc
Voltage
supply
A
B
C
D
Triple Logic
Output
(18Vdc at
8mA max.)
Heating,
cooling,
program
events
TP
SSR or
thyristor
unit
+
Output A
Output B
Output C
+
+
+
A
B
C
+ _
-
Common
_
D
Installation and Operation Handbook. Part No HA026502 Issue 1.0 Apr-00 2-13