Omega DPF20 Series User Manual

5
DPF20 Frequency, rate, total or period counter Instruction Manual
1.1 How to order
1.2 Impulse counter modes
The instrument allows for 5 selectable impulse counter modes :
• Counter (‘cn.1’) (see secon 1.19.2)
• Counter quadrature (‘cnq.2’) (see secon 1.19.3)
• Counter with inhibion (‘cnI.3’) (see secon 1.19.4)
• Counter with control add / substract (‘cnc.4’) (see secon 1.19.5)
• Counter dierenal (‘cnd.5’) (see secon 1.19.6)
Congurable up or down counng, ‘reset’ at rear terminals, front key
and/or at alarm acvaon. Congurable ‘Preset’ value. Relay acva-
on and deacvaon delays.
Alarm funcons with ‘return to preset’ or ‘reset to 0’ generate cycles
of counng (instrument counts from ‘preset’ value to alarm value
in never ending cycle). The instrument provides memory of cycles
counter.
Scalable reading with congurable mulplier factor (1 to 999999)
and congurable divider factor (1 to 999999). Memory retenon in
case or power loss. Retains conguraon and last reading.
Counng frequency up to 250 KHz, in ‘FAST’ mode (see secon 1.16).
1.3 Ratemeter modes
In ratemeter mode the reading is proporonal to the measured fre-
quency. The instrument allows for 2 selectable ratemeter modes :
• Ratemeter (‘rt.6’) (see secon 1.19.7)
• Ratemeter quadrature (‘rtq.7’) (see secon 1.19.8)
The ratemeter mode has a single input channel, with scalable read-
ing. The quadrature ratemeter mode has 2 inpur channels available
for detecon of sense of turn when working with quadrature signals.
Scalable reading with congurable mulplier factor (1 to 999999)
and congurable divider factor (1 to 999999).
For low frequency applicaons, the ‘SLOW’ mode provides the best
response me for each applicaon (see secon 1.15).
Maximum frequency up to 500 KHz and minimum frequency down
to de 0.001 Hz (1 mHz) with ‘SLOW’ mode acve.
Reading is proporonal to the signal period. Scalable reading with
congurable mulplier factor (1 to 999999) and congurable divider
factor (1 to 999999).
For applicaons with long periods (slow frequencies), the ‘SLOW’
mode provides the best response me for each applicaon (see sec-
on 1.15).
1.4 Periodmeter mode
Funcons included Secon
‘Fast access’ yes 1.19.12
‘SLOW’ mode yes, for slow frequencies 1.15
‘FAST’ mode yes, for fast counng 1.16
Mulplier and divider from 1 to 999999 1.19.2
Reset congurable
yes (front, rear and linked
to alarm acvaon)
1.19.14 and
1.10 and
1.19.11
Preset yes 1.19.2
Trigger level congurable 1.19.10
‘Trigger Sense’ funcon helps to set the trigger 1.13
Sensor selecon by menu 1.19.10
Cycle counter 1.14
Retenon memory yes, recovers with power 1.11
‘On Power Up’ yes
1.19.15
Excitaon voltage congurable 1.19.10
Display lters recursive
1.19.7 and
1.19.8 and
1.19.9
Memory max., min., cycles 1.19.12
Password
blocks access to congu-
raon menu
1.19.19
Alarms
double setpoints
acvaon delays
deacvaon delays
hysteresis
inverted relays
locked alarms
1.19.11
Display brightness 5 levels
1.19.22
Table 1 - Funcons included
1.5 Funcons included
DPF20
Model Power Opon 1 Others
HV- -
-
Opon 2
-
Opon 3
-
-R1
(1 relay)
-AO (analog output)
-RTU (Modbus RTU)
-S4 (RS-485)
-S2 (RS-232)
-T1 (1 transistor)
-SSR (1 SSR drive)
- (empty)
-HV (85-265 Vac/dc)
-LV (11/60 Vdc,
24 Vac, 48 Vac)
-NBT (no buons)
-GN (green led)

Omega DPF20 Series Specifications

General

Brand	Omega
Model	DPF20 Series
Category	Measuring Instruments
Language	English