Front View; Power Connections; Sensor Configuration And Connections; Rear View - Omega DPF20 Series User Manual

DPF20 Frequency, rate, total or period counter

1.6 Front view

Alarms
Logo
Button 'UP'
Button 'LE'
Front reset 'Fast access'
(see section 1.19.14) (see section 1.19.12)

1.7 Power connections

Earth connection - Although a
terminal is provided for earth
connection, this connection is
optional. The instrument does
not need earth connection for
correct operation nor for com-
pliance with the security regu-
lations.
Fuse - To comply with security regulation 61010-1, add to the power
line a protection fuse acting as disconnection element, easily acces-
sible to the operator and identified as a protection device.
Power 'H'
Power 'L'

1.8 Sensor configuration and connections

Selecting one of the sensors listed at the
'SnSr' menu entry, will configure the sen-
sor parameters to the values indicated in
the table.
The table also indicates the typical con-
nections for each type of sensor. Param-
eters can be manually modified.
Connections are indicated for a single sen-
sor connected to the channel A. For two
sensors (for inhibition control, quadrature
signal, etc) apply the same connection cri-
teria also to channel B.
Note : indicated values are typical values.
Check the correct specifications with your
sensor datasheet and adapt the required
configuration and connections as needed.
Button 'SQ'
'Configuration menu'
(see section 1.19)
8 9 0
fuse 250 mA time lag
fuse 400 mA time lag
Sensor
Mechanical contact 0 V channel A
Namur
NPN 2 wires
NPN 3 wires
PNP 2 wires
PNP 3 wires
Push-pull
TTL
CMOS
Pick-up
AC<30 Vp
Inductive
Table 2 - Configuration and connections for different types of sensors.

1.9 Rear view

Option 3
Units
(see section 1.10)

1.10 Signal connections

+
~
1 2 3 4 5
-
~
Connections
channel A Vexc
0 V channel A
0 V channel A Vexc
0 V channel A
0 V channel A Vexc
0 V channel A Vexc
0 V channel A
0 V channel A
6
Instruction Manual
Option 1 Option 2
Signal
Detail of the plug-in screw terminals provided with
the instrument. The instrument is provided with all
terminals needed, both male and female.
Reset
Canal B
Canal A
Vexc.
0 V
Pulls Vexc. Antirrebound
filter
pull-up no 100 mSec.
pull-down 9 Vdc no
pull-up 18 Vdc no
pull-up 18 Vdc no
pull-down 18 Vdc no
pull-down 18 Vdc no
no 18 Vdc no
no 5 Vdc no
no no no
Power
(see section 1.7)
Trigger
2,5 Vdc
3,0 Vdc
2,5 Vdc
2,5 Vdc
2,5 Vdc
2,5 Vdc
2,5 Vdc
2,5 Vdc
0 Vdc