Woodward 2301E, Инструкция по установке и эксплуатации, Страница: 23 / 182

Manual 26641 2301E Digital Control
Woodward 13
Because the load-sharing-line relay is contained in the control, no relay is
required between the control and the load-sharing-line bus.
Do not touch Load Share pins without discharging ESD to physical
earth first and making sure the control’s PE terminal is connected to
physical earth before wiring.
The load share signals have 4 kV ESD withstand when the control is
not grounded rather than 8 kV or more on other pins. (Load Share
Lines have at least 7 kV withstand when the control is grounded.)
Greater than 4 kV ESD events are uncommon in the typical
installation environment, but may happen.
Use shielded cable and connect the load-sharing lines directly to terminals 10(+)
and 11(
–). Connect the shield to terminal 12(chassis). When all controls in the
system are of the 2301E, 2301D or 2301A types, the shields may be connected
continuously between controls. When load sharing with different controls, do not
connect the shields at the point where connections are made to the load-sharing-
line bus or if needed, connect only through a capacitor. The droop contact for
selecting droop or isochronous operation is wired in series with the circuit-
breaker auxiliary contact between terminal 37 (configurable) and terminal 31 (see
CB Aux/Droop contact).
When running a single unit on an infinite bus with an external load control device,
terminals 37 (configurable) and 40 must be connected to terminal 31 to connect
the Load Matching Circuit to the load-sharing lines. The load-sharing lines must
be wired to the external load control device. The circuit-breaker auxiliary contact
will then be connected to this device and not to the 2301E.
Power Supply (Terminals 48
–50)
Run the power leads directly from the power source to the control, connecting the
negative lead to terminal 49, and the positive lead to terminal 48. Pin 50 is
provided as an optional Physical Earth (PE) wire landing point in addition to the
PE Ground stud, in case the particular installation requires a PE wire to be run
with dc power. Either both grounds must be connected or just the PE stud
connected to the cabinet/chassis, as Physical Earth though a 30 cm long by
13 mm wide (12 inches long, ½ inch wide) or shorter flat hollow braid or
comparable surface area wire, the ratio of copper surface to length may be used
to provide shorter smaller grounding wires.
When power is applied, the 2301E begins performing internal memory tests to
‘boot-up’ the processor, which takes less than 2 seconds to complete. The CPU
Status LED between terminals 30 and 31 remains on during this boot-up. The
control will remain in I/O lock and will not control the prime mover until the boot-
up is complete. For systems requiring fast start functions, it will be necessary to
continuously power the 2301E.
DO NOT attempt to start the prime mover while the CPU Status LED
is RED.
DO NOT apply power to the control at this time. Applying power
before a control is completely connected may damage the control.