SES 2422 OUT2422工业模块
增加增益电位计的设置可提供更快的瞬态响应（降低突然变化引起的速度变化幅度负载中）。为了获得最佳响应，缓慢增加增益（转动电位计，顺时针），直到电压表上的电压略微变为不稳定，然后根据需要缓慢逆时针旋转增益，以稳定仪表读数。步进加载发电机，或撞击致动器终端轴，以确保原动机返回到正确的速度速度设置的过冲或过冲很少。为了减少过冲，增加复位（顺时针转动电位计）。
当复位电位计处于其调整的下部时（0至3开电位计刻度），顺时针增加复位可能需要降低增益（逆时针转动增益电位计）至保持稳定运行。
如果原动机返回正确速度较慢，则减小复位逆时针转动电位计图3-1说明了原动机完全通过斜坡时间电位计启动逆时针方向（无斜坡，注意不要过度扭转罐），步骤四种不同复位电位计设置下的负载，以及稳定、稳态运行条件。这些是自然曲线上的典型性能曲线吸气式（非涡轮增压）柴油发动机。
增益不一定能获得最佳性能电位计处于最大稳定顺时针位置
在某些情况下在这种情况下，增益必须略微降低，以确保以下条件下的稳定性广泛变化的条件。执行器补偿调整如果按照初始预启动中的说明设置了致动器补偿设置，通常不需要进一步调整。如果是缓慢的周期性不稳定性保持，稍微增加执行器补偿（转动电位计顺时针），并重复增益和复位调整。继续增加执行器补偿并重新调整增益并复位直到达到稳定。如果明显存在快速不稳定或极为活跃的执行器，则稍微降低执行器补偿（逆时针转动电位计）。如果必要时，执行器补偿可完全逆时针设置（注意不要过度扭转锅）。这可能是发动机启动时需要的扭转会导致燃油连杆过度移动。低怠速调整1.原动机应大致处于额定速度，低怠速电位计设置为最大值（完全顺时针方向，小心而不是过度扭转锅）。打开额定值的外部闭合联系2.降低低怠速（逆时针转动电位计）直到达到推荐的怠速。
Increasing the setting of the GAIN potentiometer provides faster transient
response (decreases the magnitude of the speed change from a sudden change
in load). To achieve optimum response, slowly increase the GAIN (turn the
potentiometer clockwise) until the voltage on the voltmeter becomes slightly
unstable, then slowly turn the GAIN back counterclockwise as necessary to
stabilize the meter reading. Step load the generator, or bump the actuator
terminal shaft, to make sure that the prime mover returns to the proper speed
with little overshoot or undershoot of the speed setting. To reduce overshoot,
increase the RESET (turn the potentiometer clockwise).
When the RESET potentiometer is in the lower part of its adjustment (0 to 3 on
the potentiometer scale), increasing the RESET clockwise may require
decreasing the GAIN (turning the GAIN potentiometer counterclockwise) to
maintain stable operation.
If the prime mover is slow in returning to the proper speed, decrease the RESET
by turning the potentiometer counterclockwise
Figure 3-1 illustrates prime mover starts with the RAMP TIME potentiometer fully
counterclockwise (no ramp—be careful not to overtorque the pot), step
loadings at four different RESET potentiometer settings, and stable, steady-state
running conditions. These are typical performance curves on a naturally
aspirated (non-turbocharged) diesel engine.
Optimum performance is not necessarily obtained with the GAIN
potentiometer at the maximum stable clockwise position. In some
cases, the gain must be reduced slightly to ensure stability under
widely varying conditions.
Actuator Compensation Adjustment
If the ACTUATOR COMPENSATION is set as described under Initial Prestart
Settings, no further adjustment is normally required. If a slow periodic instability
remains, slightly increase the ACTUATOR COMPENSATION (turn the
potentiometer clockwise), and repeat the GAIN and RESET adjustments.
Continue to increase the ACTUATOR COMPENSATION and readjust the GAIN
and RESET until stability is achieved.
If a fast instability or extremely active actuator is evident, slightly decrease the
ACTUATOR COMPENSATION (turn the potentiometer counterclockwise). If
necessary, the ACTUATOR COMPENSATION may be set fully counterclockwise
(be careful not to overtorque the pot). This may be required when engine
torsionals cause excessive fuel-linkage movement.
Low Idle Speed Adjustment
1. The prime mover should be approximately at rated speed with the LOW
IDLE SPEED potentiometer set at maximum (fully clockwise—be careful
not to overtorque the pot). Open the external CLOSE FOR RATED
contact.
2. Decrease the LOW IDLE SPEED (turn the potentiometer counterclockwise)
until the recommended idle speed is reached.
