24
DPF20 Frequency, rate, total or period counter
Instruction Manual
The R1, T1 and SSR modules provides 1 relay output, 1 transistor out
-
put or 1 SSR drive output, to install in DPF20 digital panel meters, up
to a maximum of 3 modules in a single meter.
Note : for more than three relays per instrument or larger relay den
-
sity per module, see special modules R2, R4 and R6
.
Configuration is performed from the frontal keypad of the meter,
by setting the parameters at the alarms configuration menu (‘ALr.1’,
‘ALr.2’ or ‘ALr.3’ depending on the position the module is installed).
2. Output and control modules
Option
T1
Output type
transistor
Maximum voltage
35 Vdc
Maximum current
50 mA
Isolation
3500 Veff
Type of terminal
plug-in screw terminal
pitch 5.08 mm
Installation allowed at
‘Opt.1’, ‘Opt.2’, ‘ Opt.3’
Option
SSR
Output type
to control a SSR relay
Output voltage
+15 Vdc
Maximum current
45 mA
Isolation
1000 Vdc
Type of terminal
plug-in screw terminal
pitch 5.08 mm
Installation allowed at
‘Opt.1’, ‘Opt.2’, ‘ Opt.3’
Option
R1
Output type
relay
Relay type
3 contact relay (NC, NO, common)
Maximum current
8 A (resistive load)
Maximum voltage
250 Vac continuous
Isolation
3500 Veff
Type of terminal
plug-in screw terminal
pitch 5.08 mm
Installation allowed at
‘Opt.1’, ‘Opt.2’, ‘ Opt.3’
Power
Opt.2
Opt.1
Op
t.3
A B C
A B C
Signal
A B C
Rear view DPF20
The menu allows to configure the setpoint, hysteresis, independent
activation and deactivation delays, and a second setpoint to create
alarm windows.
Modules R1, T1 and SSR are isolated against all other instrument cir
-
cuits, and isolated between them.
Modules R1, T1 and SSR can be ordered pre-installed into a DPF20
digital panel meter, or standalone for delayed installation, as they do
not require soldering or special configuration.
Module
Output schematics and connections
Module R1 - Relay output
‘com’ (‘A’)
‘NC’ (‘C’)
Schematic for R1 output
‘NO’ (‘B’)
Module T1 - Transistor output
‘B’
‘A’
Schematic for T1 output
Module SSR - SSR drive output
Schematic for SSR drive output
‘B’
‘A’
SSR relay
+15 Vdc ‘C’
Table 7 - Connections
2.1 Módules R1, T1 and SSR