Toro Micro-Master Series User Manual page 32

Micro-Master Touch User Guide
Connecting Analogue Sensors, RMT440A Field Modules
The RMT440A is designed to accept four 4-20mA Analogue sensors. The sensor wiring positions are
on the left hand side connectors and marked 1 to 4 with + and – positions. The RMT440A supplies
24VDC to the + terminal to power sensors. A typical sensor connection is shown in Figure 15. Refer
to the sensor manufacturers manual for correct connection of the sensor.
RMT440A Inputs
1 2 3 4
+ - + - + - + -
+ + + +
O/P O/P O/P O/P
GND GND GND GND
Figure 15 - RMT440A Connection Schematic
Interfacing the RMT Field Module module with a Micro-Master Touch
Master
The Valve outputs of each RMT Field Module are numbered 1 to 8. Each RMT Field Module module
will replace 1 Expansion Module from slot 2 to 4 in the Master unit, or, any or all Expansion Modules
in a Remote Unit. This means that you can have a mix of a Master, Remotes and RMT Field Module'
s, or a Master and all RMT Field Module's. This allows maximum flexibility when designing and using
the system. The only condition is that slot 1 in the Master must always be a Station Module.
The radio system in the Touch controllers allows use on up to 8 separate channels. By default, the
radio channel is set to channel 1. If multiple Touch systems have been installed in the surrounding
area it may be necessary to select another channel. The channel of the Master Unit dictates the
channel to be used in the RMT Field Modules. If the channel is set to 2 in the Master, then the
channel must be set to 2 in all Remote Units and RMT Field Modules that you wish to use with that
Master Unit. This only needs to be done if you are not going to use the default settings.
Once setup and turned on, the RMT Field Module will automatically announce and configure itself in
to the Touch Master Unit.
Resetting the Module back to Factory settings
Resetting the module back to the factory settings can be achieved easily. Ensure that the unit is
turned off. Press and hold the SET key then turn the unit on. This will reset the module to Channel =
1, PosiSense = off, Unit = 0, Module = 0. All LEDs will flash 3 times.
Setting the Channel Number
By default, the channel number is set to 1. Figure 12 shows the front panel of the RMT Field Module.
It can be seen that many of the keys have multiple functions.
To set a new channel number, ensure that the unit is turned on, then, in order, one button at a time,
press SET, CHANNEL and the number of the new channel to use (1 to 8). You will have 5 seconds
© 2014 Toro Australia Pty Ltd 24 Ver 1.2, June 2014