响应时间说明-中英对照
响应时间是输入频率的比例输出从10%转换成最大的校验值的90%改变的要求的时间；响应时间影响继电器的传输速度。 继电器相应时间
如果你需要不同的相应时间，接通Dynalco
标准响应时间是全范围150毫秒标准输入频率： 0-80赫兹量程到0-20，000赫兹量程。
低于80赫兹响应时间比例较慢。
当提供其它响应时间时，不推荐修改领域，可能导致损害，造成产品保证无效。
如果你需要不同的继电器响应时间，请联系Dynalco
调整个别给定值
1.证实SST-2000A-/H校验到正确的量程频率范围(参阅第22 页)。
2. 要求的工具：一把非常薄的螺丝刀或者一件变压器调整工具；信号发生器(Dynalco提供的F-16或者类似工具)。
3. 提供一个信号来源；使用F-16信号发生器或者相似零值信号源头，或者使用频率信号在发动机上产生磁性加速。
4. 将一个频率信号传输到终端5和6。输入频率应该等于给定值调整的目标RPM值；
设置点频率（Hz）= 飞轮上的齿数或孔数 RPM x No./60
例如： 为一个齿轮在800 RPM旋转的72齿计算给定值频率。
频率（Hz）= (800) x （72 齿）/60 = 90Hz (终端5和终端6)
选择方法1：当那些发动机未运行时，调整确定点；
当发动机未运行时，而您没有模拟RPM仪器时，使用信号发生器调整个别给定值。
1．断开终端5和6的连线；标明或者确定电线的位置保证正确的替换；
2. 将计算的设定点频率施加给终端5(HI)和6(COM)；
3. 将运行电源接入SST-2000A-/H；选择电源时，见的SST-2000A-/H或者spec金属板盖。
4. 选择合适的给定值微调旋钮
5. 转动旋钮：
* 逆时针方向，降低给定值 (降低设定的继电器跳闸速度)。
* 顺时针，提高给定值 (增加设定的继电器跳闸速度)。
6. 缓慢地转动旋钮以便不要过快的通过该目标设定点；旋钮有良好的分辨率；因此设定值较大的变化需要多次操作。
7. 在调整旋钮时，听继电器是否z在给定值跳闸。 当接触跳闸时，你能听到一下清楚的咔哒声。 如果周围的环境噪音不能清楚的听到该声响：使用替换方法中描述的欧姆表。
8. 微调调整：
* 在继电器跳闸时，再次缓慢地反转设定值旋钮进行调整直到继电器跳闸。
* 再次，缓慢地转动旋钮进行调整直到继电器跳闸。
9．对终端5(HI)和6(COM)再次接通。观察极性。
10．对调整的其它设定点重复上述程序。
替换方法2：发动机运行时调整个别给定值
发动机不强调非临界的过速值；当发动机在非临界速度运行时，使用替换方法3调整设定点； 注意： 当给定值达到时，无论是否连接继电器，继电器将引起发动机关闭或者开动。
临界的过速通常是现有发动机过速关闭；运行
警告不要在过速条件下运行；
当发动机在非临界速度运行时，使用替换方法3调整设定点；
发动机的速度需要改变时。 如果你不能保证发动机过速，使用替换的方法1。
1 已要求的速度运转发动机；
* RPM指标装置/ 转速表从SST-2000A-/H的比例输出测量：
*或者在发动机附近安装一独立的测量仪表。
2.等RPM 趋于稳定。
3.当RPM稳定时，选择合适的给定值整理旋钮。
4. 遵循替换的方法1的程序： 1-10步骤。
替换方法3：在高噪音地区调整个别给定值
如果环境的高噪音无法听到继电器的咔哒声：
1断开线路：
* SST-2000A-/H的中心位置已经调整的设定点继电器；
*在相同的继电器上的其它两出点之中任何一个；
[标出电线或者确定其位置；以便正确进行连接]；
2. 把欧姆表和末端和该继电器连接；并连结该继电器的任何其它终端。 [如果调整继电器1，把欧姆表和终端18 &17orl8&19 连结起来。 ]欧姆表将根据选择的终端显示短可和开启状态。
3. 按照方法1：1-10的调整继电器；当继电器跳闸时，欧姆表显示显示短可和开启状态，与先前继电器显示的状态相反。
4. 重新连接继电器和接线。
5. 对其它调整的设定点重复上述程序
证实设定点数值
您可以在不运行发电机的情况下， 观察和调整设定值；
注：SST-2000A/H （无设定值）没有设定值;
临时跨接线不干扰任何继电器的正常的操作。
4-20 mA比例输出(终端9和10)不影响没程序运行。
程序运行不影响14个Vdc脉冲输出；
1. 接线终端16连接有符合观测需要的设定点(SST-2200A-/H 和SST-2400A/ H)：
设定点1：跨接线16-12
设定点2：跨接线16-13
设定点3：跨接线16-14
设定点4：跨接线16-15
2.当您对两个终端进行跨接时,0-1 mA输出测量仪表在终端7 和8 断开并且显示设备RPM ( 频率,比率,等等)数值。
3. 当跨接线移除时，仪表对接回正常操作。
图4-14在0-1 mA输出测量仪上连接终端7和8，验证设定值并查看RPM ( 频率,比率,等等)
(显示 设定点1的验证程序.)
Adjusting Signal Sensitivity
Desensitizing Standard Inputs
Signal sensitivity is factory set to 25 mVrms (about 35 mV peak or 70 mV peak-to-peak) and satisfies most applications.
Fig. 4-12 The
signal sensitivity control is located under the A DIP switch.
FREQUENCY RANGE SWITCH
AFTER SETTING RANGE SWITCH "A", TRIM FOR 10.0V AT OPEN TERMINALS 8 5 7 AT FULL SCALE FREQUENCY.
5 A
4
3 C 2 I
1 f
SIGNAL
SENSITIVITY
Higher sensitivities can be more vulnerable to noise.
To raise sensitivity Turn the SIGNAL SENSITIVITY potentiometer (Fig. 4-12) clockwise. At full clockwise rotation, sensitivity is approximately 5 mVrms.
To lower sensitivity Turn the SIGNAL SENSITIVITY potentiometer counterclockwise. At full counterclockwise rotation, the sensitivity is approximately 100 mVrms.
Desensitizing Contact Closure
Jumper terminals 30 and 11 to desensitize the unit to about 1 Vrms. Signal Sensitivity pot setting does not affect this procedure.
Fig. 4-13 Jumper terminals 11 to 30 to desensitize the SST-2000A/H for contact closure input.
-™[_^ 4 20 NC
SIGNAL [~ ** 5 21 C
INPUT | 6 METER CALIBRATE 22 NO
0-1 MA I "* 7 © 23 NC
METER OUTPUT I + 8 24 C
PROPORTIONAL I ^ 9 o o 25 NO
MAIN OUTPUT | + 10 ^ v^y
1 2 26 NC
+14 VDC OUTPUT +
11* Zf
SETPOINTI.^ 12 © 28 NO
SETPOINT2 4
: : 13 29
: : SETPOINT3 A A *^n JUMP
: ADJUSTMENTS FORC
: : • SETPOINT4 JUMP
: : : : 15 31 TODI
•:'•'• JUMP
VERIFY SETPOINTS 16 32 RESE
@ ® ®
RELAY NO. 2
RELAY NO. 3
RELAY NO. 4
Chapter 4
Response Time
Response time is the time required for the proportional outputs to change from 10% to 90% of the maximum calibrated value for an instantaneous step change of the input frequency. Response time affects the transfer speed of the relays.
RELAY RESPONSE
Contact Dynalco if you need a different relay response time.
Standard response time is 150 milliseconds over all
standard input frequency ranges: 0-80 Hz full-scale to 0-20,000 Hz full-scale.
Response times below 80 Hz full-scale are proportionally slower.
While other response times can be provided, field modification is not recommended since damage might result that could void the product warranty.
Contact Dynalco if you need a different relay response time.
Adjusting Individual Set Points
Verify that the SST-2000A/H is calibrated to the correct full-scale frequency range (see page 22).
Tools required: Either a very thin-bladed screwdriver or a transformer alignment tool; signal generator (Dynalco's F-16 or equivalent).
Provide a signal source. Use an F-16 signal generator or similar zero-crossing signal source, or use the frequency signal generated by the magnetic pickup on the engine.
Apply a frequency signal to terminals 5 & 6. This frequency input should equal the target RPM value of the set point being adjusted.
RPMx No. of teeth or holes on flywheel
Setpoint Frequency (Hz) =
60
For example: Calculate the set point frequency for a gear with 72 teeth rotating at 800 RPM.
Frequency (Hz) = — = 960 Hz (to terminals 5 & 6)
60
Alternate Method 1: Adjusting set points while the engine is not running
Use a signal generator to adjust individual set points when the engine is not operating and if you do not have an analog RPM meter.
1 Disconnect the wires to terminals 5 & 6. Mark or position the wires to assure correct replacement.
28
Calibrating the Speed Switch
2 Apply the calculated set point frequency to terminals 5 (HI) &
6 (COM).
3 Apply operating power to the SST-2000A/H. See lid of your
SST-2000A/H or spec sheet for power choices.
4 Select the appropriate set point trim pot.
5 Turn the pot:
* Counterclockwise to lower the set point value (reduce the speed at
which the set point relay will trip ).
* Clockwise to raise the set point value (increase the speed at which
the set point relay will trip).
6 Turn the pot slowly so as not to pass the target set point by a large
amount. The pot has fine resolution, so a large change in set point
value may take several turns.
7 While adjusting the pot, listen for the relay to trip at the set point.
You can hear a distinct click when the contacts transfer. If high
ambient noise makes it impossible to hear the relay click: use an
ohmmeter as described in Alternate Method 2, below.
8 Fine tune the adjustment:
* After the relay trips, slowly REVERSE the adjustment of the set
point pot until the relay again trips.
* Again, slowly turn the pot FORWARD until the relay trips.
9 Reattach the wires to terminals 5 (HI) & 6 (COM). Observe polarity.
10 Repeat the above procedure for other set points to be changed.
Alternate Method 2: Adjusting Individual Set Points While The Engine Is Operating
A non-critical overspeed value is one that will not stress the engine. Use Alternate Method 3 to adjust set points while the engine is operating at a non-critical speed. NOTE: when the set point value is reached the relay will cause an engine shutdown or activate whatever is connected to that relay.
A critical overspeed is typically the actual engine shutdown overspeed; running
WARNING: DO NOT RUN AT OVERSPEED
Use Alternate Method 3 to adjust set points while the engine is operating at NON-CRITICAL speed only.
the engine at this speed is generally not desired. Use Alternate Method 1 if you cannot guarantee engine overspeed.
1 Run the engine at the desired speed using:
29
Chapter 4
* an RPM indicator/tachometer operating from one of the
proportional outputs of the SST-2000A/H:
* an independent meter mounted elsewhere on or near the engine.
2 Wait for the RPM to stabilize.
3 When RPM is stable, select the appropriate set point trim pot.
4 Follow the procedure in Alternate Method 1: steps 1-10.
Alternate Method 3: Adjusting individual set points in high noise areas
If high ambient noise makes it impossible to hear the relay click:
1 Disconnect the wire from:
* the center post of the SST-2000A/H set point relay being
adjusted.
* either one of the other two contacts on the same relay.
[Mark the wires or position them so they can be correctly reattached.]
2 Connect an ohmmeter to the center terminal of this relay and to
either one of the other terminals of this relay. [If adjusting Relay 1,
connect the ohmmeter to terminals 18&17orl8&19.] The
ohmmeter will indicate either a short or an open condition
depending on which terminals are chosen.
3 Adjust the relay as outlined in Method 1: 1-10. When the relay trips,
the ohmmeter will show a short or an open, opposite to the
indication it had before the relay tripped.
4 Reattach the wires to the relays.
5 Repeat the above procedure for other set points to be changed.
30
Calibrating the Speed Switch
Verifying Set Point Values
The temporary jumper does not interfere with the normal operation of any relays.
The 4-20 mA proportional output (terminals 9 & 10) is NOT affected by this procedure.
The 14 Vdc pulsed output is not affected by this procedure.
You can view and adjust the set point values without having to run the engine. NOTE: The SST-2000A/H (no set points) does not have set points.
1 Jumper terminal 16 with the terminal that corresponds with the set
point you want to view (for SST-2200A/H and SST-2400A/H):
* Set point 1: jumper 16 to 12
* Set point 2: jumper 16 to 13
* Set point 3: jumper 16 to 14
* Set point 4: jumper 16 to 15
2 When you jumper the two terminals, the 0-1 mA output meter
connected to terminals 7 and 8 disconnects and displays the RPM
(frequency, rate, etc.) value at that set point.
3 When the jumpers are removed, the meter switches back to its
normal operation.
Fig. 4-14 Verify the set point values and view the RPM (frequency, rate, etc.) on the 0-1 mA output meter connected to terminals 7 & 8.
(Shown
is the procedure for verifying Set point 1.)
METER READS S.R1RPM
PROPORTIONAL MAIN OUTPUT
+14 VDC OUTPUT 7 ©
1 \ 3
| SETPOINT 1 ADJUSTMENTS
SETPOiNT 1 w 12*
SETPOINT 2 ^ 13
; ;
: : SETPOINT 3 „ 14
; : ;
: : : SETPQI.NT4. 15
16*
VERIFY SETPOINTS
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2013.3.6