18PR-21-R [MSYSTEM]
Rack-mounted DCS Signal Conditioners 18-RACK;
| 型号： | 18PR-21-R |
| 厂家： | 
M-SYSTEM |
| 描述： | Rack-mounted DCS Signal Conditioners 18-RACK DCS 分布式控制系统 |
| 文件： | 总4页 (文件大小：117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MODEL: 18PR
Rack-mounted DCS Signal Conditioners 18-RACK
CAUTION
1) This unit's output waveform is not uniform due to its
scaling method. The user must be aware that it may be
inconvenient for certain types of application.
2) This unit is designed to accept at the maximum of 100
kHz, which may cause errors due to chattering in the input
pulses.
PULSE SCALER
Functions & Features
• Converting pulse rate into convenient engineering unit for
display on a totalizing counter or meter
Use input relays which do not cause chattering (e.g.
mercury relays). Other relays could be used only with a CR
filter, for 10 Hz at maximum.
Typical Applications
• Positive displacement flowmeters and turbine flowmeters
• Magnetic tachometers
3) Use M-System’s Model M2PRU instead of this unit in
conjunction with the pulse output from M-System’s power
transducers.
R
C = 1 µF
R = 10kΩ
PULSE
SCALER
Relay
C
MODEL: 18PR–[1][2]–R
GENERAL SPECIFICATIONS
Construction: Rack-mounted; terminal access via screw
terminals on the front and connector on the rear; terminal
cover provided
ORDERING INFORMATION
• Code number: 18PR-[1][2]-R
Connection
Specify a code from below for each of [1] and [2].
(e.g. 18PR-11-R)
Input: M3.5 screw terminals (torque 0.8 N·m)
Output: M3.5 screw terminals (torque 0.8 N·m)
and connector
• Input frequency range (e.g. 0 – 356.7 Hz)
• Output frequency range (e.g. 0 – 1.00 Hz)
Power input: Supplied from connector
Screw terminal: Nickel-plated steel
[1] INPUT
Isolation: Input to output to power
1: Dry contact (max. 100 kHz)
Input pulse sensing: Capacitor coupled; detecting pulse rise
Sensitivity adjustment: Single-turn screwdriver adjustment
(front); 25 mVp-p – 5 Vp-p
2: Voltage pulse (max. 100 kHz)
Scaling factor adjustment: 10-position rotary switch; 0.9999
[2] OUTPUT
× 10 – 0.0001 × 10–6
0
1: Open collector (max. frequency 20 kHz)
2: 5 V pulse (max. frequency 20 kHz)
3: Relay contact (max. frequency 2 Hz)
4: 24 V pulse (max. frequency 20 Hz)
POWER INPUT
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
18PR SPECIFICATIONS
ES-1860 Rev.11 Page 1/4
http://www.m-system.co.jp/
MODEL: 18PR
INPUT SPECIFICATIONS
■ Dry Contact: Mechanical contact or open collector
Max. frequency: 100 kHz
OUTPUT SPECIFICATIONS
■ Open Collector: 50 V DC @ 50 mA (resistive load)
Frequency range: 0 – 20 kHz
Pulse width time requirement: 5 μsec. min. (20 msec. min.
for frequencies ≤ 10 Hz)
ON pulse width: Approx. 30 μsec.
Saturation voltage: 0.6 V DC
Sensing: Approx. 7.5 V DC @ 1 mA
ON/OFF level: ≤ 20 kΩ for ON, ≥ 100 kΩ for OFF
■ Voltage Pulse: Square or sine waveforms*
Max. frequency: 100 kHz
■ Relay Contact: 120 V AC @ 200 mA (cos ø = 1)
240 V AC @ 100 mA (cos ø = 1)
24 V DC @ 200 mA (resistive load)
Maximum switching voltage: 240 V AC or 30 V DC
Maximum switching power: 24 VA or 4.8 W
Minimum load: 5 V DC @ 10 mA
Pulse width time requirement: 5 μsec. min. (20 msec. min.
for frequencies ≤ 10 Hz)
Input amplitude: 25 mVp-p – 50 Vp-p
Minimum amplitude requirement
•With duty ratio 50 ±10 %
Frequency range: 0 – 2 Hz
ON pulse width: Approx. 30 msec.
Relay life: ≥ 5 × 10
≥ 10 cycles (electrical)
■ 5 V Pulse
7
cycles (mechanical)
(frequency: amplitude)
5
0 – 2 kHz: 25 mVp-p
0 – 20 kHz: 50 mVp-p
Frequency range: 0 – 20 kHz
Low pulse width: Approx. 30 μsec.
High level: 5 V ±10 %
0 – 40 kHz: 1 Vp-p
0 – 100 kHz: 5 Vp-p
•With duty ratio other than 50 ±10 %
(pulse width: amplitude)
Low level: ≤ 0.5 V
Load resistance: 600 Ω minimum
■ 24 V Pulse
5 μsec.: 5 Vp-p
10 μsec.: 3.5 Vp-p
Frequency range: 0 – 20 Hz
High pulse width: Approx. 30 msec.
High level: 24 V ±10 %
50 μsec.: 2 Vp-p
100 μsec.: 1 Vp-p
500 μsec.: 0.5 Vp-p
Low level: ≤ 0.5 V
Input impedance: 100 kΩ minimum
Load current: 30 mA max.
Load resistance: 800 Ω minimum
*Voltage pulse examples
25mV – 50V
INSTALLATION
0V
Current consumption: Approx. 80 mA
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Standard Rack 18BXx or 18KBXx
Weight: 150 g (0.33 lb)
25mV – 50V
0V
25mV p-p
– 50V p-p
0V
PERFORMANCE
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute
(input to output or power)
500 V AC @ 1 minute (outut to power)
1500 V AC @ 1 minute (input or output or power to ground)
18PR SPECIFICATIONS
ES-1860 Rev.11 Page 2/4
http://www.m-system.co.jp/
MODEL: 18PR
EXTERNAL VIEW
7
8
5
1
6
2
Connector
Sensitivity Adj.
Scaling Factor Adj.
Digital Switches
3
4
EXTERNAL DIMENSIONS unit: mm (inch)
2–M3
SCREW
8–M3.5
7 (.28)
SCREW
7 (.28)
24 (.94)
32 (1.26)
78 (3.07)
TERMINAL ASSIGNMENTS
7
8
5
6
1
2
3
4
18PR SPECIFICATIONS
ES-1860 Rev.11 Page 3/4
http://www.m-system.co.jp/
MODEL: 18PR
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
SENSITIVITY
ADJ.
SCALING
FACTOR ADJ.
Isolation
*
Pulse Volt.
Amplifier
Output
Driver
+
–
1
2
3
4
7
8
5
6
+
Scaler
One-Shot
+7.5V
INPUT
OUTPUT
–
OUTPUT
POWER
*Dry contact input only.
Specifications are subject to change without notice.
18PR SPECIFICATIONS
ES-1860 Rev.11 Page 4/4
http://www.m-system.co.jp/
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