18YCH-AA-R/B [MSYSTEM]
Rack-mounted DCS Signal Conditioners 18-RACK;
| 型号： | 18YCH-AA-R/B |
| 厂家： | 
M-SYSTEM |
| 描述： | Rack-mounted DCS Signal Conditioners 18-RACK DCS 分布式控制系统 |
| 文件： | 总2页 (文件大小：93K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MODEL: 18YCH
Rack-mounted DCS Signal Conditioners 18-RACK
GENERAL SPECIFICATIONS
Construction: Rack-mounted; terminal access via screw
terminals on the front and connector on the rear; terminal
cover provided
CONTROL OUTPUT ISOLATOR
(applicable to HART signal, opencircuit detection selectable)
Functions & Features
Connection
Input: Connector
• Accepting a 4 – 20 mA DC input and providing an isolated
4 – 20 mA DC output
Input monitor: M3.5 screw terminals (torque 0.8 N·m)
Output: M3.5 screw terminals (torque 0.8 N·m)
Power input: Supplied from connector
Screw terminal: Nickel-plated steel
Isolation: Input to output to power
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)
Opencircuit detection: Input current 0 mA when the output
loop is open.
• Input from the Standard Rack connector can be monitored
at the front terminals
• Isolates and relays HART signals
• Opencircuit detection selectable
Photo MOSFET Relay ON Resistance; 3 Ω max.
INPUT SPECIFICATIONS
■ DC Current: Input resistor incorporated
Input current: ≥ 0 mA
MODEL: 18YCH–AA–R[1]
OUTPUT SPECIFICATIONS
The output goes below 0 % when the input is open.
ORDERING INFORMATION
• Code number: 18YCH-AA-R[1]
Specify a code from below for [1].
(e.g. 18YCH-AA-R/B)
HART COMMUNICATION
Transmission gain: Approx. -3 dB (within 1 – 3 kHz)
measured with 250 Ω at output
Loop impedance: 250 Ω ±10 %
Communication directions: Bidirectional
INPUT
Current
A: 4 - 20 mA DC (Input resistance approx. 250Ω)
INSTALLATION
Current consumption: Approx. 60 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: 110 g (0.24 lb)
OUTPUT
Current
A: 4 – 20 mA DC (Load resistance 600 Ω max.)
250 Ω ±10 % for HART communication
PERFORMANCE in percentage of span
Accuracy: ±0.1 %
POWER INPUT
DC Power
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Response time: ≤ 0.5 sec. (0 – 90 %)
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute
(output to input or power)
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
[1] OPTIONS
Opencircuit detection
blank: none
500 V AC @ 1 minute (input to power)
1500 V AC @ 1 minute
/B: Opencircuit detector
(input or output or power to ground)
18YCH SPECIFICATIONS
ES-1833 Rev.0 Page 1/2
http://www.m-system.co.jp/
MODEL: 18YCH
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
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
HART Isolation
Z
S
DC Isolation
*2
4 – 20mA DC
4 – 20mA DC
*1
*1
Output
Driver
Opencircuit
Detector
Amplifier
5
6
3
4
7
8
1
2
+
−
+
−
R
L
250Ω
HHC INPUT MONITOR
OUTPUT
HHC
INPUT
(DCS Output, HHC *1)
POWER
*1. Hand-held communicator
*2. Included with option /B
Specifications are subject to change without notice.
18YCH SPECIFICATIONS
ES-1833 Rev.0 Page 2/2
http://www.m-system.co.jp/
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