[PDF]General Specifications - Yokogawa Electric Corporationc15181565.r65.cf2.rackcdn.com/GS77J04A07-02E_002.pdfsignals into isolated 4 to 20 mA DC cur...
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General Specifications
Model MA7D Distributor (Dual-output and Unified Signal Type)
GS 77J04A07-02E
■ General The MA7D is a insulated dual-output, plug-in type distributor that is used in combination with a two-wire type transmitter to convert the transmitter’s 4 to 20 mA DC signals into isolated 4 to 20 mA DC current or 1 to 5 V DC voltage signals. • Supports BARD-800. • Provided with Power indicator lamp
F02.EPS
■ Standard Performance
■ Model and Suffix Codes MA7D-
-
Model Input signal A: 4 to 20 mA DC Output-1 signal A: 4 to 20 mA DC
6: 1 to 5 V DC
Output-2 signal A: 4 to 20 mA DC
6: 1 to 5 V DC
Power supply 3: 24 V DC10% 4: 85-132 V AC / 85-150 V DC 5: 170-264 V AC
F01.EPS
● Items to be specified when ordering • Model and Suffix Codes: e.g. MA7D-AA6-3 Note: When output signals of 4 to 20 mA and 1 to 5 V DC are required, specify Output-1 as 4 to 20 mA DC because of the allowable load resistance.
■ Input/Output Specifications Input signal: 4 to 20 mA DC signal from two-wire type transmitter Input resistance: 250 Transmitter power supply: 25.250.25 V DC (provided with a current limiter to keep the current between 25 and 35 mA) Allowable conductor resistance (RL): Up to [(20 – transmitter’s minimum operating voltage) V/0.02 A] Maximum allowable input current: 40 mA DC Output signal: 1 to 5 V DC voltage or 4 to 20 mA DC current insulated dual outputs Allowable load resistance:
Accuracy rating: 0.1% of span Response speed: 150 ms, 63% response (10 to 90%) Insulation resistance: 100 M minimum at 500 V DC between input, output-1, output-2, power supply and grounding terminals mutually Withstanding voltage: 2000 V AC for one minute between input, (output-1 and output-2), power supply and grounding terminals mutually; 1000 V AC for one minute between output-1 and output-2 terminals Operating temperature range: 0 to 50°C Operating humidity range: 5 to 90% RH (no condensation) Supply voltage range: 24 V DC10%, 85-150 V DC , 85-132 V AC, 170-264 V AC (47-63 Hz) Effects of power line regulation: Up to 0.1% of span for the regulation within allowable range of each supply voltage range Effects of ambient temperature variations: Up to 0.15% of span per 10°C Power consumption: 2.6 W at 24 V DC; 2.3 W at 110 V DC; 4.6 VA at 100 V AC; 6.5 VA at 200 V AC
■ Mounting and Appearance Material: ABS resin (casing) Mounting method: Wall or DIN rail mounting More than 5 mm interval is required for side-by-side close mounting. Connection method: M3.5 screw terminals External dimensions: 85 (H)51 (W)132 (D) mm (including a socket) Weight: Approx. 250 g (main unit), approx. 80 g (socket)
■ Accessories Spacer: One (used for DIN rail mounting)
Output-1 Range Allowable Load Resistance Output-2 Range Allowable Load Resistance 4 to 20 mA DC 750 maximum 4 to 20 mA DC 350 maximum 1 to 5 V DC 2 k minimum 1 to 5 V DC 2 k minimum T02.EPS
Zero adjustment: –5 to 5% Span adjustment: 95 to 105% GS 77J04A07-02E ©Copyright Jul. 2003 (MC) 2nd Edition Sep. 2004 (KP)
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■ Terminal Assignments 8 7
1 2 3 4 5 6 7 8 9 10 11
6 5 4
9
3
10 11
1 2
OUTPUT-1 OUTPUT-1 N.C. INPUT INPUT INPUT SUPPLY SUPPLY GND OUTPUT-2 OUTPUT-2
(+) (–) (PS+) (–) (COM) (L+) (N–) (+) (–) F03.EPS
■ Block Diagrams (1) Combination with two-wire type transmitter using internal power supply
(2) Combination with two-wire type transmitter using external power supply External power supply
Power supply
Transmitter PS+ –
4
Overcurrent protect circuit
5
Low drift input processing circuit
Transmitter Z
4
S
+
Insulation circuit
5
4~20 mA
Output-1 circuit
COM 6
2 Z
–
1 +
6
OUTPUT-1 –
S
Insulation circuit Output-2 circuit
10 1 + OUTPUT-2 11 2 –
7 Power supply circuit
8 9 6
L+ SUPPLY N–
(3) Example to construct Intrinsically Safe System using Zener Barrier Transmitter +
4
4~20 mA
–
5 6
GND
F04.EPS
■ External Dimensions Main unit
Main unit fixing stopper (Upper, lower)
Socket Unit: mm
18
40
81
85
35.4
80
86.5
2-Ø4.5 mounting holes (Depth 24)
DIN rail 11-M3.57 screws
50
103 132
29
3.3
7.8 51 max. F05.EPS
• The information covered in this document is subject to change without notice for reasons of improvements in quality and/or performance. All Rights Reserved. Copyright © 2003, Yokogawa Electric Corporation
GS 77J04A07-02E 2nd Edition Sep. 01, 2004-00
