Technical data

Flow Meter FC01-Ex Flow Meter FC01-Ex
16 Ex atmosphere - Definitions and mounting instructions 16 Ex atmosphere - Definitions and mounting instructions
XAS XAO
XAH
8
7654321
8
7654321
8
7654321
i
L
≤ 10 mA
U
V
CD
fig. 10
2.6.2.2.2 Electrical connection - frequency output (version FC01-Ex-U1T4)
The quantity-dependent pulse to operate a counter or higher-order control is available at
connector XAH /BUSY E/- and /BUSY C/+ (pins 3 and 4) (see fig. 9 - Circuit diagram FC01-Ex
- open collector output).
Signal ground shall be connected to pin 3 (BUSY E/-) and the driving load to pin 4 (BUSY C/+).
Select cable size ≤ 1.5 mm
2
to make the connections.
The shield can be connected to connector XAS, pin 3.
Electronic signal processing
If the frequency output of the FC01-Ex is connected to an electronic counter, computer or PLC,
the load current should not exceed 10 mA so as to ensure low level is 0.8 V. The max. admissi-
ble voltage level of 48 V is irrelevant in this connection.
Typical circuit (example 1)
2.6.2.2.2 Electrical connection - frequency output (version FC01-Ex-U1T4)
The quantity-dependent pulse to operate a counter or higher-order control is available at
connector XAH /BUSY E/- and /BUSY C/+ (pins 3 and 4) (see fig. 9 - Circuit diagram FC01-Ex
- open collector output).
Signal ground shall be connected to pin 3 (BUSY E/-) and the driving load to pin 4 (BUSY C/+).
Select cable size ≤ 1.5 mm
2
to make the connections.
The shield can be connected to connector XAS, pin 3.
Electronic signal processing
If the frequency output of the FC01-Ex is connected to an electronic counter, computer or PLC,
the load current should not exceed 10 mA so as to ensure low level is 0.8 V. The max. admissi-
ble voltage level of 48 V is irrelevant in this connection.
Typical circuit (example 1)
XAS XAO
XAH
8
7654321
8
7654321
8
7654321
i
L
≤ 10 mA
U
V
CD
fig. 10
The FC01-Ex driver output comprises an integral safety circuit which when isolating the counter
operating coil will limit overvoltages caused by inductance and convert the energy stored.
The counter should be able of processing a counting frequency of ≥ 10 Hz.
Pulse duration is not dependent on frequency and maintained at 50 ms (±0.1%).
It should therefore be ensured that the counter can be increased by one during the time
available.
The FC01-Ex driver output comprises an integral safety circuit which when isolating the counter
operating coil will limit overvoltages caused by inductance and convert the energy stored.
The counter should be able of processing a counting frequency of ≥ 10 Hz.
Pulse duration is not dependent on frequency and maintained at 50 ms (±0.1%).
It should therefore be ensured that the counter can be increased by one during the time
available.