Datasheet

750-492 / 753-492
1
234
2-Channel Analog Input Module 4-20 mA
Isolated differential inputs
Fig. 750 Series/Technical data see page 24/Delivered without miniature WSB markers
750/753 Series marking see pages 10 ... 11 / 12 ... 13
+AI 2
Data contacts
Error AI 2
-AI 2
Shield
(screen)
Error AI 1
Function AI 1
+AI 1
Shield
(screen)
-AI 1
Function AI 2
+E1
+E2
13 14
C
D
B
A
—E1 —E2
S
S
750-492
+AI 2 +AI 1
Shield
(screen)
+AI
Shield
(screen)
Logic
A
D
Function
I
-AI 1 -AI 2 -AI
270 pF
Error
10nF
750-492
1
2
3
4
5
6
7
8
The 2-channel analog input module processes differential signals of a
magnitude 4–20mA.
The input signal of each channel is electrically isolated and is transmitted with
a resolution of 13 bits.
The internal system supply powers the module.
The shield (screen) is directly connected to the DIN rail.
• Measured-value acquisition: time synchronous (both inputs)
• Measuring range overflow/underflow: status byte and LED
• Method of conversion: SAR (Successive Approximation Register)
• Operating mode: continuously sampling (preset)
• Protection: non-linear limiting
Description
Item No.
Pack.
Unit
2AI 4-20mA Differential Input 750-492 1
2AI 4-20mA Differential Input (without
connector)
753-492 1
Accessories
Item No.
Pack.
Unit
753 Series Connectors 753-110 25
Coding elements 753-150 100
Miniature WSB Quick marking system
plain 248-501 5
with marking see pages 352 ... 353
Approvals
Also see "Approvals Overview" in Section 1
Conformity marking 1
Shipbuilding pending
r UL 508
r ANSI/ISA 12.12.01
Class I, Div. 2, Grp. ABCD, T4
4 IEC 60079-0, -15 BR-Ex nA II T4 750-492
4 EN 60079-0, -15
EN 61241-0, -1
I M2 / II 3 GD Ex nA IIC T4
Technical Data
Number of inputs 2, electrically isolated from each other
Power supply via system voltage DC/DC
Current consumption typ. (internal) 80 mA
Signal current 4 ... 20 mA
Input resistance < 270Ω / 20mA
Input filter low pass first order, f
G
= 5 kHz
Resolution of the A/D converter 14 bits
Monotonicy without missing codes yes
Resolution of measured value 13 bits
Value of a LSB (least significant bit) 2.4 μA
Measuring error (25°C) < ± 0.05 % of the full scale value
Temperature coefficient < ± 0.01 % / K of the full scale value
Measuring error
< 0.4 % over whole temperature scale
≤ 0.1 % of upper range value (non-linearity)
Crosstalk attenuation ≥ 80 dB
Sampling time of repetition 1 ms
Sampling delay (module) 1 ms
Sampling delay (channel/channel) ≤ 1 μs
Sampling duration ≤ 5 μs
Admissible continuous overload 30 V
Dielectric strength 500 V DC channel/channel
or channel/system
Bit width 2 x 16 bits data
2 x 8 bits control/status (optional)
Wire connection CAGE CLAMP
®
Cross sections 0.08 mm² ... 2.5 mm² / AWG 28 ... 14
Stripped lengths, 750/753 Series 8 ... 9 mm / 0.33 in
9 ... 10 mm / 0.37 in
Width 12 mm
Weight 54 g
EMC: 1 - immunity to interference acc. to EN 61000-6-2 (2005)
EMC: 1 - emission of interference acc. to EN 61000-6-4 (2007)
WAGO Kontakttechnik GmbH & Co. KG
Subject to design changes 18.05.2012
Postfach 2880 - D-32385 Minden
Hansastr. 27 - D-32423 Minden
Phone: [phone] E-Mail: [e-mail]
Fax: [phone] www.wago.com