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Short Form Data

Standard Signal
Interface Converter

MU-
RS232/485

=

RS232

RS485

with 

m

P

Inputs

input quantity

I

E

DC current or

U

E

DC voltage

rated input

input resistance

current

I

EN

20 mA

50 

W

voltage

U

EN

10 V / 1 V

1 M

W

 / 100 k

W

measuring range

current input

voltage input

0 ... I

EN

0 ... U

EN

“live zero” option

modulation range,

1.2 I

EN

1.2 U

EN

admissible
overload limit

continuously

1.2 I

EN

1.2 U

EN

1 s max.

2  I

EN

2  U

EN

Interfaces

type

RS 232 (V.24) and
RS 485 (SCPI commands)

Baud - rate

19200 Baud

as an option:
switching output

8 ... 40 V DC / 10 ... 30 mA

open collector

insulation voltage 1 kV

switching output

for voltages up to 230 V AC/DC

MOS FET

and currents up to 100 mA
insulation voltage 3 kV

Other Ratings

accuracy

±

0.1% and 

±

1 count

(for 0 ... I

EN

 resp. 0 ... U

EN

 )

auxiliary voltage

refer to 

General Data

dimensions

 WxHxL

22.5 mm x 80 mm x 115 mm

weight

approx. 0.12 kg

for detailed information

refer to Data Sheet No. 052.##

prices

refer to Price Sheet No. 052.##

Short Form Data

RS232-RS485
Converter

AP-
RS232/485

RS232

RS485

Function

The converter is directly plugged to a 9 - contact serial interface of a PC.
It converts the RS232 signals of the PC into standardized RS485
signals. This conversion enables to simultaneously connect several
devices by a 2 - wire junction to one interface and to inquire one after
another.
The device is protocol - transparent, i.e. the RS485 signals are trans-
lated 1:1 into the signals of the RS232 interface.
Depending on the 2 - wire junction of the RS485, a half- duplex opera-
tion only will be possible. This means, only one device may send in the
network at a time. By that a simultaneous operation of sending and
receiving will not be possible.

Ratings

case details

metalized thermoplastic case

terminals

SUB - D 9 contact (RS232 interface on the PC)
screw - terminals 2 contacts, 
wire - cross section 4 mm

2

 max. 

(RS485  interface)

auxiliary supply

power adapter prim. AC 230 V, 

±

10%, 50 Hz,  

sec. DC 9 V / 250 mA
included with supply

dimensions

73 mm x 34 mm x 12 mm

weight

approx. 50 g

RS 485

RS 232

120 

W

120 

W

MUāĆāRS232/485

~

=

U

H

for detailed information

refer to Data Sheet No. 054.##

prices

refer to Price Sheet No. 054.##

Summary of Contents for A1U 2.2

Page 1: ...ional Transducer MMU 3 0 for Frequency FU 2 2 for Phase Angle cos CU 2 2 for DC Current or DC Voltage AUD VUD 2 2 for RMS Current or RMS Voltage AUE VUE 2 2 for Temperature PTU 2 0 Isolation Transduce...

Page 2: ...UA load independent DC voltage 0 10 V or optionally2 10 V live zero 10 0 10 V bipolar output only with wide range supply load RA 4 kW load error 0 1 based on 50 load change residual ripple 1 rms resp...

Page 3: ...nd Reactive Power EW 2 2 EB 2 2 DGW 2 2 VGW 2 2 DUW 2 2 VUW 2 2 DGB 2 2 VGB 2 2 DUB 2 2 VUB 2 2 P Q with mP Inputs input quantity sinusoidal AC current voltage measuring unit PE active or reactive pow...

Page 4: ...os CU 2 2 with mP Inputs input quantity sinusoidal AC current voltage measuring unit phase angle power factor in E single phase AC system or D 3 phase 3 wire balanced load system measuring ranges 37 0...

Page 5: ...tional outputs additional 1 to 3 modules each module WxHxL 22 5 mm x 80 mm x 115 mm weight approx 0 6 kg basic version for detailed information refer to Data Sheet No 055 prices refer to Price Sheet N...

Page 6: ...d value class 0 2 0 2 of end value only for DC models on request auxiliary voltage refer to General Data dimensions WxHxL 22 5 mm x 80 mm x 115 mm weight approx 0 12 kg for detailed information refer...

Page 7: ...RS232 RS485 Converter AP RS232 485 RS232 RS485 Function The converter is directly plugged to a 9 contact serial interface of a PC It converts the RS232 signals of the PC into standardized RS485 signal...

Page 8: ...dependent DC current rated current IAN 4 20 mA load range RA 0 500 W based on 20 mA load error 0 1 based on 50 load change residual ripple 1 rms of IAN with load RAN idling voltage 16 V response time...

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