Woodward 2301E-ST, Инструкция по установке и эксплуатации

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Manual 26694 2301E-ST
Woodward 22
Contact Inputs (Terminal 39–41)
The 2301E-ST has three other discrete input channels that are available for use. These contacts are
configurable and can be programmed to perform one of the following functions:

IDLE - RATED SPEED
When the state of this contact is open the speed reference moves toward the programmed IDLE
speed setpoint at its own configured rate set in service menus. When the state of this contact is
closed the speed reference moves toward the programmed RATED speed setpoint at its own
configured rate set in service menus.

52G BREAKER
The state of this input should directly reflect the state of the unit’s generator breaker. This input is
used to activate the correct control mode. When this contact input is open, the droop is enabled.
When this contact input is closed the unit will be in the isochronous mode.
Typically when used as the isoch/droop select contact, this contact is wired to directly reflect the
state of the system’s utility tie breaker, with a switch or relay wired in series with the tie breaker aux
contact to allow users to manually select the load mode the control operates in when paralleled to
the utility. The control is always set to droop mode by opening the 52G BREAKER input.
This contact will also close internally the loadshare lines after softloading and minimal load is reached, LS
Window.

OVERSPEED TEST ENABLE
When overspeed testing is performed, this contact is used. An overspeed test is allowed only under
the condition that the remote speed setpoint function must be disabled and the turbine speed is
within speed range. An overspeed test will allow the control’s speed setpoint to be increased above
the normal maximum limit. When this contact is closed, the control detects overspeed and issues a
trip. After overspeed testing ends, the contact should be opened.

PROCESS CONTROL ENABLE
This contact is used to enable the process control logic when closed. In order for process control to
work correctly an external 4–20 mA signal needs to be setup on one of the analog inputs to provide
feedback for the process PID.

SECOND DYNAMICS
If this option is enabled, the On-Line dynamic variables are available. With the contact open, Off-Line
dynamic variables are active, and with the contact closed, then the On-Line dynamic variables are
active.
Actuator Output (Terminals 13-15)
Connect the unit’s actuator wires to the control’s actuator driver output on terminals 13(+), 14(–), and
15(shield). This output’s current range is software configurable and can be programmed to output a drive
current of 0–200 mA,
20–200 mA, 4–20 mA, or 0–20 mA. Do not connect the shield wire to the actuator or any other point.
Verify that the output’s shield wire has continuity its entire distance to the actuator and is insulated from
all other conducting surfaces.
Analog Inputs (Terminals 19-24)
Connect input wiring to terminals 19(+), 20(–), and 21(shield) to use Analog Input #1 and connect input
wiring to terminals 22(+), 23(–), and 24(shield) to use Analog Input #2. These Analog Inputs are software
configurable to function as one of the following options:

Remote Speed Setpoint

Monitor Signal

Synchronizer Bias Signal Input (–2.5 to +2.5 Vdc signal)

Process Setpoint

Process Signal
Released