789-620 Current Sensor with Bus Connection in DIN-Rail Mountable Enclosure Digital

789-620 Current Sensor with Bus Connection in DIN-Rail Mountable Enclosure Digital
789-620
Current Sensor with Bus Connection in DIN-Rail Mountable Enclosure
Measuring range 0 ... 80 A DC
Digital
32767
Digital = I x 364.077
29128
- 10
90 100
- 3641
I/A
- 32768
Short description:
Intelligent current sensor for monitoring solar plants or
inverters for DC measurements within a large current measuring range.
Description
Item No.
Pack.
Unit
Technical Data
Current sensor with bus connection
789-620
1
Electrical data:
Measuring range
Voltage supply
Max. current consumption
Transmission error
Accessories
Item No.
Accessories for data and auxiliary power supply
RJ-45 interface module
289-965
RJ-45 interface module with shield
(screen) clamping saddle
289-966
ETHERNET RJ-45 connector, IP20
750-975
Pack.
Unit
1
1
1
Approvals
Conformity marking
Standards/Specifications
1
DIN EN 50178; EN 61000-6-2 ;
EN 61000-6-4
General Specifications
Dimensions (mm) W x H x L
Ambient operating temperature
Storage temperature
WAGO Kontakttechnik GmbH & Co. KG
Subject to design changes
35 x 55 x 90
Height from upper-edge of DIN 35 rail
-20°C ... +70°C
-40 °C ... +85 °C
14.01.2015
Temperature coefficient
Time frame for polling by master
Hot plugging
Terminating resistor
Status indication
Mechanical data:
Power cable feed-through
Degree of protection
Communication:
Interface
Transmission channels
Protocols
Connector
Addressing
Max. length of bus line
Baud rate
Parity
Postfach 2880 - D-32385 Minden
Hansastr. 27 - D-32423 Minden
0 ... 80 A DC
12 - 34V
≤ 8 mA at 24 V
≤ 0.5 % of upper range value
(at room temperature)
0.01 % /K
< 30 ms
possible
150 Ω (can be activated via DIP switch 1)
Green: power
Red: measured current < -3 A or > 83 A
15 mm
IP20
RS-485
Half duplex 8-bit data, 1 stop bit
MODBUS over serial line
RJ-45
1 ... 32
≤ 1200m
19,200 baud
Even
Tel.: +49(0)571/887-0
E-Mail: [email protected]
Fax: +49(0)571/887-169
www.wago.com
789-620
RJ-45-Connector Pin Assignment:
Pin
Function
1
Ub
2
3
n.c.
4
A (Data+)
5
B (Data-)
6
n.c.
7
GND
8
Communication Description:
MODBUS Function
Read Holding Registers (0x03)
Address of Measured Value
0x0004
Data Type Measurement
Integer
Error Numbers:
id
Description
01
Illegal Function
03
Illegal Data
101
Overflow (Current > +83 A)
102
Underflow (Current < -3 A)
▯ = ON
DIP Switch Adjustability
Adress
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Terminating resistor
DIP Switch
3
4
5
6
150 Ohm
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DIP Switch 1
NOTICE:
Only set the MODBUS address in the
OFF state.
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