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B-5 Signal and pulse outputs
Four transistor outputs with common ground (minus pole).
The volume pulses acquired for one measurement cycle are output as pulse packets. They
are therefore not suitable for open and closed -loop control purposes.
Designation
Cable connection
Screening
Special features
Nominal data:
F
The limits in the certificate of conformance must be observed when using the EK220 in
Ex Zone 1, also for data which is not mentioned here.
Maximum switching voltage
Maximum switching current
Maximum voltage drop
Maximum residual current
Pulse duration
Space duration
Output frequency
B-6 Optical serial interface
Optical interface according to IEC 62056-21; bit-serial, asynchronous data transmission
according to ISO 1177, half duplex.
Support of Data transmission mode "C" (= Data read-out, programming and manufac-
turer-specific applications with automatic change of the baud rate).
Baud rate
Format
Connection
B-7 Electrical serial interface (internal)
Interface RS232 or RS485 (selectable), e.g. for the connection of an FE260 Function E x-
pansion Unit, a modem or an MTL5051 Interface Isolator.
© Elster GmbH
DA1... DA4
Plug-in terminals; d = 0.3 ... 1.4 mm²
With flexible cable use wire-end sleeves.
Connect cable screen to the cable gland over the full area.
Each output can be parameterised and sealed separately.
30 V DC
100 mA DC
1V
0.001 mA
Min. 125 ms, adjustable on a pitch of 125 ms
Min. 125 ms, adjustable on a pitch of 125 ms
Max. 4 Hz, adjustable
300 Bd (initial baud rate); automatic up to 9600 Bd.
1 start, 7 data, 1 parity (even) and 1 stop bit.
Optical read-out head on device front panel
(automatic positioning / fixing by magnet).
Volume Conversion Device EK220
117
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