Controlled Products Systems Group 222X383 - Manual (Page 29)

Installation and Maintenance Manual
21
D0119, Rev. F
Connecting a Master / Slave Pair
Configuring two operators to be a Master & Slave pair is easy with the Smart Touch Controller. There is no
need to order a special model or any adapters. The area of the board marked Dual Gate employs a 3-wire
RS485 serial port for communication between Master & Slave operators. Note: Master Slave operators must
have the same version of software loaded on both machines.
1. An electrical conduit for the interconnecting wires must span between the two operators. This conduit
must contain only low voltage ≤ 24V control and signal wiring.
2. Complete the installation of both of the operators as separate machines and verify that their basic
functions are correct as solo operators before interconnecting them.
3. The two gate operators should be supplied by home runs from separate 20 Ampere circuit breakers in
the main panel, but if there is only one circuit, be absolutely certain that the breaker and wire size is
sufficient for the load of two motors. See the Appendix.
4. External control inputs, vehicle detectors and entrapment protection sensors may be connected to either
gate operator without regard to preference.
5. To interconnect the two operators, route a shielded twisted triple cable between the electric control
boxes and connect to the RS485 Dual Gate terminals, in matching order on both machines: In the
RS485 shaded area connect the terminals for Master Com to Slave Com, Master A to Slave A and the
Master B to Slave B using the insulated trio of wires. Connect the shield to a solid ground at either the
Master or the Slave unit (Do not ground both ends). Cut off the shield and insulate (tape up) the
exposed strands at the other operator.
6. The Installer Menu in each machine must be set as a Master or a Slave under menu item [dg__]. Set
one operator as a Slave [dg_1] and the other as a Master [dg_2]. If the function of any external input is
to be different than the factory default, configure for the desired function on the operator where that input
is connected. Internal functions, such as the close timer or reversal distance, are controlled by the
Master operator regardless of the settings in the Slave.
7. Once set as a Master or a Slave the operators will be in constant communication with each other. If that
communication stops because the wires become severed or one operator is turned off, both machines
will cease functioning and the LCD will display Err4, which is a Master/Slave communication error. This
error cannot be reset until both machines are functional and communicating properly again.