Technical Bulletin—TC-9100 Universal Controller
19
Note 1: The Override mode is disabled when the controller is in Low
Limit (Anti-freeze) mode or in OFF mode. In this case, the 3-
speed fan controller operates in Automatic mode and responds
as required by the programmable module to which it is
connected.
Note 2: In controllers with Version 3 or later firmware (Date Code
9714 or later), the Override mode is also disabled in NIGHT
and STANDBY modes. The override is only active in
COMFORT mode.
Note 3: In controllers with Version 3 or later firmware (Date Code
9714 or later), a programmable module with a controller
algorithm (algorithms 1-6) can be configured to set its output to
0 % (or OFF) when the 3-speed fan override sets the fan to
OFF. This interlock is required for applications where heating
or cooling equipment must be switched off when there is no air
flow, such as in fan coil units with electric heating, direct
expansion coils or heat pumps. Refer to
Configuration
Parameters for Controller Algorithms
(PM Tag PMxTYP Bit
10),
further in this manual, for details.
When Output Module OCN7 is not used by Output Module OCN5 as the
third speed of a 3-speed fan controller, the triac may be driven on when
the operating mode of the controller is COMFORT by setting Bit 8 in
Item TCS2 (Address 85 hex, 133 dec) to 1. This output can be used, for
example, for lighting control.
The parameters to be defined for each output module are listed below.
Refer to
Appendix 2 – Worksheet 3
, or
Appendix 1 – Table 1: Item List
,
for the Item addresses.
Note: Do not forget to set Item TCS2, Bit 6, according to the power
supply frequency of 50 or 60 Hz.
Table 8: Output Module Configuration Items
Item Tag Type
Description
TCS2
Bit 6
Set to 1 if the power supply frequency is 60 Hz, or set to 0
for 50 Hz.
Bit 8
Set to 1 if OCN7 is not used for 3-speed fan control and
DO7 should be on when the controller is in COMFORT
mode.
OCN1 1
Byte
Output Module 1 Configuration
.
Bits
5…1
Source of Module
in binary code:
01010 (0A hex) = Output Module 1 (OCM1).
01011 (0B hex) = Output Module 2 (OCM2).
⇓
01111 (0F hex) = Output Module 6 (OCM6).
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Output Module
OCN7
Configuration
Parameters
