Woodward has launched hardware and software updates to address many CIP requirements; however, complete NERC/CIP compliance involves more than the controls and is dependent on plant infrastructure and procedures. The physical security remains the user’s responsibility.
Power supply output must be low impedance (for example, directly from
batteries). DO NOT power low-voltage versions of the control from high-voltage
sources with resistors and zener diodes in series with the control power input.
The 2301A control contains a switching power supply which requires a current
surge to start properly.
To prevent damage to the control, do not power low-voltage versions
of the control from high-voltage sources.
High and low voltage models of 2301A Speed Controls are available. Low
voltage models require a supply of 10 to 40 Vdc, 12 W. High voltage models
require a supply of 88 to 120 Vac or 90 to 150 Vdc., 12 W. The ac supply may be
50 to 400 Hz.
If a battery is used for operating power, an alternator or other battery charging
device is necessary to maintain a stable supply voltage.
To prevent damage to the control, make sure that the alternator or
other battery-charging device is not connected to the control when
the battery is disconnected from the control.
Location Considerations
Consider these requirements when selecting the mounting location:
· Adequate ventilation for cooling
· Space for servicing and repair
· Protection from direct exposure to water or to a condensation-prone
environment
· Protection from high-voltage or high-current devices, or devices which
produce electromagnetic interference
· Protection from excessive vibration
· An ambient operating temperature range of –40 to +85 °C (–40 to +185 °F)
Do not mount the control on the engine.
Electrical Connections
External wiring connections and shielding requirements for a typical control
installation are shown in the plant wiring diagram, Figures 2-4 and 2-5. These
wiring connections and shielding requirements are explained in the balance of
this section.
