Endress+Hauser Digital Recorder eco-graph c Betriebsanleitung Seite 128

Technical Data
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128
10 Technical Data
10.1 Input values
10.1.1 Digital input (standard)
Number: 4 digital inputs
As per DIN 19 240:
logic "0" corresponds to -3 to +5 V, activation with logic "1" (corresponds to +12 to +30
V),
max. 32 V, max. 25 Hz, input current approx. 2.7 mA at 24 V, min. pulse duration 20 ms
Selectable function per input:
control input (interrupt acquisition, setup lock, time synchronisation, external
intermediate evaluation, sign change, back lighting off, external cycle), ON/OFF
message, operating time pulse counter input, combination of message+operating
time+quantity over time
10.1.2 Digital input (option)
Number: 2 cards with additional per 14 digital inputs
As per DIN 19 240:
logic "0" corresponds to -3 to +5 V, activation with logic "1" (corresponds to +12 to +30
V),
max. 32 V, max. 25 Hz, input current approx. 1.6 mA at 24 V, min. pulse duration 20 ms
Selectable function per input:
control input (interrupt acquisition, setup lock, time synchronisation, external
intermediate evaluation, sign change, back lighting off, external cycle), ON/OFF
message, operating time pulse counter input, combination of message+operating
time+quantity over time
Note!
Note on the input functions events, events+operating time, quantity from time, control
input:
Depending on the number of channels switched on, the signal must be present for the
following time at least:
Number of active channels:
1 to 10
11 to 20
21 to 30
As of 31 channels
10.2 Output values
10.2.1 Power supply output
for activating the digital inputs with potential-free contacts 24 V DC (20 V at 100 mA),
short-circuit proof, unstabilised
10.2.2 Relay outputs (standard)
Number: 3 changeover contacts, 230 V AC / 3 A for limit value messages
Time:
100 ms
250 ms
500 ms
1 s
Digital Recorder