Woodward The following I/O list is utilized by Vertex-Pro models only

Redundancy

With Vertex-Pro dual-redundant models, the CPU modules operate in a special master/slave configuration, using

synchronized memory and one-millisecond transfers to ensure bumpless transfers, and allow on-line repairs, and

program changes, to increase overall system availability. These models allow for automatic and/or manual transfers

between the two sets of modules in cases of external I/O, internal module, or input power failures. Dual-redundant

models allow any module to be replaced while the unit is operating on-line. Annunciation of any control failure or

transfer is provided through all communication links and event logs.

Configurability

The following I/O list is utilized by Vertex-Pro models only. Vertex-Pro-C models are customized to the specific

application and may use the same, or more or less I/O signals, depending on the application. Vertex-Pro inputs and

outputs (I/O) are arranged into pre-defined and configurable groups. Pre-defined I/O is fixed based on its use in all or

most applications. Configurable I/O is selected based on the specific needs of each application.

INPUT SIGNALS:

Power Sources (Simplex or Redundant)

 AC/DC—Power Supply (88–132 Vac/47–63 Hz or 100–150 Vdc)

 HVAC—Power Supply (180–264 Vac/47–63 Hz)

Discrete Inputs (38)

Two discrete inputs are assigned pre-determined functions and thirty-six are configurable:

 Emergency Shutdown

 Reset

 Configurable Discrete Inputs (36)

Analog Inputs (24)

Five analog inputs are assigned pre-determined functions, and twenty-one are configurable:

 Compressor Flow Signal (4–20 mA)

 Compressor Suction Pressure Signal (4–20 mA)

 Compressor Discharge Pressure Signal (4–20 mA)

 Compressor Suction Temperature Signal (4–20 mA)

 Compressor Discharge Temperature Signal (4–20 mA)

 Configurable Analog Inputs (19) (4–20 mA)

OUTPUT SIGNALS:

Discrete Outputs (20)

Two discrete outputs are assigned pre-defined functions and, eighteen are configurable:

 Motor/Compressor Shutdown

 Motor/Compressor Alarm

 Configurable Discrete Outputs (18)

Analog Outputs (8)

One analog output is assigned pre-defined functions and seven are configurable:

 Anti-surge Valve (4–20 mA)

 Configurable Analog/Actuator Outputs (7) (4–20 mA)

Communication Ports (3)

 (2) Ethernet ports (OPC or Modbus® *)

 (1) Serial RS-232. RS-422. RS-485 Modbus port