Sierraメーカー951の使用説明書/サービス説明書
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Sierra Model 951 Digital Flo-Box Instruction Manual Part Number IM-951 Revision A 09-05 5 Harris Court, Building L Monterey , CA 93940 (831) 373-0200 (800) 866-0200 Fax (831) 373-4402 www .
Page 1 DESCRIPTION The Model 951 Digital Flow Box is a microprocessor-based digital indicator and power supply , capable of interfacing directly to a mass flow meter or a mass flow controller . The integrated +/-15 vdc @250ma power supply provides a well regulated, short circuit and thermal overload protected output.
INST ALLA TION AND WIRING INST ALLA TION The Model 951 enclosure is designated for panel mounting in a 1/8 DIN cutout. The cutout dimensions are shown below . T o panel mount the 951, perform the following steps: 1. Rotate the four pawl screws ( outside screws in each corner) several turns counter-clockwise to retract the pawls.
Page 3 CAL T ARE H1 H2 L1 L2 Pawl Screw (1 of 4 outside screws) These 4 screws are used to mount the instrument in a panel. Menu Switch S1 (Single Function Switch) Increment Switch S2 (Single Function.
Page 4 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | J1 P1 6 +15 vdc 8 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |.
Page 5 SWITCH DEFINITIONS Menu Switch (S1) The Menu switch (S1) is used to cycle through the flow controller setpoints, alarm setpoints, alarm hysteresis, calibration values and decimal point locations. The sequence is as follows. The designators, in parenthesis, identify text that will be displayed, momentarily , followed by the value.
Page 6 SWITCH DEFINITIONS (cont) Step and Min-Max Switch (S3) This switch has a dual function. When in the MENU sequence, it steps the digit to be incremented, one position to the right. Using S3 in conjunction with S2 allows rapid updating of all parameter values.
Page 7 FUNCTION DEFINITIONS The Mode switch (S1) cycles through the following functions. Flow Set Point (StPt) The Setpoint (0-5 vdc) command signal used to control the flow through a flow controller . The output voltage is 0-5 vdc. The setpoint output is defined as: Setpoint Output = StPt / CAL x 5.
Page 8 FUNCTION DEFINITIONS (cont) Alarm Set Point High 2 (SPH2) SPH2 is independent and functions identically to SPH1. SPH2 has its own open collector outputs and front panel LED (H2). Alarm Set Point Low 2 (SPL2) SPL2 is independent and functions identically to SPL1.
Page 9 FUNCTION DEFINITIONS (CONT) Decimal Point (dP) dP allows selection of decimal point locations for display . The locations selectable are x.xxxx, xx.
Page 10 OPERA TING INSTRUCTIONS TURN-ON INSTRUCTIONS Reference Figures 3 and 4 for proper input and output signal wiring. 1. Apply power to the instrument. 2. V erify the instrument readout blanks momentarily , then displays the value of the input signal.
Page 1 1 PROGRAM INSTRUCTIONS (cont) 2. Depress MODE (S1) switch once. The text followed by the current value of Alarm Set Point High 1 (SPH1) will be displayed. Use S2 and S3 to set Alarm Set Point High 1 to the desired value. Proceed to Step 3 to set Alarm Setpoint Low 1 (SPL1) or depress S4 to exit MODE sequence.
Page 12 PROGRAM INSTRUCTIONS (cont) 7. Depress MODE (S1) switch once. The text followed by the current value of Hysteresis Low will be displayed. Repeat Step 2 to set Alarm Hysteresis Low to the desired value. The maximum value for HL is 99 counts.
Page 13 Prior to connecting the 951 to the Flowmeter or Controller , verify that the Controller's +/-15 vdc requirement is no more than 40 0 ma. The 951 is capable of supplying up to 500ma for short periods of time ( in 1/2 or 1 hour increments).
Page 14 CALIBRA TION INSTRUCTIONS (cont) 6. Depress and hold CAL (S5) for approximately 3 seconds. The FS CAL LED should illuminate and the readout should display the FS Cal value within +/- 1 digit.
Page 15 RS232 SERIAL COMMUNICA TIONS (Special Order Only) The Parity (Even or None) and the Baud Rate (2400 or 9600) are selectable by setting DIP switches SW a and SWb, accessible from the right side of the instrument case.
Page 16 RS232 SERIAL COMMUNICA TIONS (Special Order Only) [Z] [CR] [LF] Zero the displayed reading [F] [CR] [LF] Calibrate Full Scale (Input signal is scaled to display Full Scale) [S] [counts] [CR] [LF] Set Full Scale display value.
MODEL SR5 PROGRAM MENU DIAGRAM Depress MODE ST ART Set Depress Depress Increments Flashing Digit Steps Flashing Digit to Right Set Depress MODE Depr.
デバイスSierra 951の購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
Sierra 951をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはSierra 951の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Sierra 951の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Sierra 951で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Sierra 951を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はSierra 951の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Sierra 951に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちSierra 951デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。