Datasheet

857-420
3
228
JUMPFLEX
®
Transducers
Repeater power supply, configurable with current and voltage output
<_________ 94 mm/3.68 in _________> 6 mm/0.23 in
<_________ 96 mm/3.76 in _________>
____________
_>
_>
OUT
IN
POWER
5
6
1
2
3
4
7
8
OUT+
GND 2
Us+
GND 3
U
Sensor+
IN
GND 1
GND 1
Configuration via:
DIP Switches
Short description:
The 857-420 Repeater Power Supply links 2- or 3-wire transmitters located in
the field. It provides the power required and transmits the analog signals in an
electrically isolated way.
Characteristics:
• Power supply to SMART transmitters
• Calibrated scale switching
• Safe 3-way isolation with 2.5kV test voltage to EN 61140
Description
Item No.
Pack.
Unit
JUMPFLEX
®
transducers, for DIN 35 rail 857-420 1
Repeater power supply, configurable with current and voltage output
Technical Data
Configuration:
Configuration DIP switches
Input:
Input signal 0 ... 20 mA, 4 ... 20 mA
(calibrated switchable)
Input resistance ≤ 50 Ω
Max. input current 50 mA
Transmitter supply V
v
= 18 V at 30 mA
Output:
Output signal 0 ... 20 mA, 4 ... 20 mA,
0... 5 V, 0 ... 10 V, 2 ... 10 V, 1 ... 5 V
(calibrated switchable)
Load impedance 600 Ω (Out = mA)
2 kΩ (Out = V)
Offset < 20 μA / < 10 mV
Residual ripple < 10mV eff
General specifications:
Voltage supply V
S
24V DC
Supply voltage range 16.8 V ... 31.2 V
Current consumption at 24 V DC ≤ 45 mA
Max. operating frequency 100 Hz
Response time (T
10-90
) < 3.5 ms
Transmission error ≤ 0.1 % of the full scale value
Temperature coefficient ≤ 0.01 % /K
Technical Data
Environmental requirements:
Ambient operating temperature -25 °C ... +70 °C
Storage temperature -40 °C ... +85 °C
Safety and protection:
Test voltage (input/output/supply) 2.5 kV AC, 50 Hz, 1 min
Connection and type of mounting:
Wire connection CAGE CLAMP
®
S
Cross sections solid:
0.08 mm² ... 2.5 mm² / AWG 28 ... 14
fine-stranded:
0.34 mm² ... 2.5 mm² / AWG 22 ... 14
Strip lengths 9 ... 10 mm / 0.37 in
Dimensions and weight:
Dimensions (mm) W x H x L 6 x 96 x 94
Height from upper-edge of DIN 35 rail
Weight 46.7 g
Standards and approvals:
Conformity marking 1
r UL 508
r ANSI/ISA 12.12.01 (pending)
Shipbuilding g (pending)
Accessories see pages 268 ... 271
WAGO Kontakttechnik GmbH & Co. KG
Subject to design changes 01.07.2013
Postfach 2880 - D-32385 Minden
Hansastr. 27 - D-32423 Minden
Tel.: [phone] E-Mail: [e-mail]
Fax: [phone] www.wago.com