Omega DPF20 Series User Manual

34
DPF20 Frequency, rate, total or period counter Instruction Manual
2.5 Module S2
Module S2 provides 1 RS-232 ASCII communicaons port, to install in
DPF20 digital panel meters. Protocol specicaons are the same as with
module S4 (see secon 2.4), with only dierence that the physical bus is
RS-232 instead of RS-485.
S2 modules allow for point-to-point communicaon over RS-232 and also
allow for mulnode communicaon over RS-232 using a ‘Daisy-Chain’ type
of connecon.
Terminals RX1 and TX1 are for connecon to the RS-232 bus. Terminals
RX2 and TX2 are for RS-232 mulnode connecon. Frames received on
RX1 with desnaon address dierent than the local instrument’s ad-
dress, will be retransmied over the TX2 terminal. In a similar way, frames
received from RX2 with desnaon address other than the local address,
will be retransmied over TX1 terminal.
Up to a maximum of 3 S4 modules can be installed in a single instrument,
all modules isolated between them and isolated from all other circuits.
Modules S2 can be ordered pre-installed into a DPF20 digital panel meter,
or standalone for delayed installaon, as they do not require soldering or
special conguraon.
Opon S2
Output type RS-232 ASCII communicaon port
Bus RS-232
Speed 57.6 Kbps to 600 bps
Data format 8n1 (standard), 8o1, 8n2, 8e1
Protocol ASCII
Architecture ‘master - slave’
Addresses 01 to 31
‘Broadcast’ address 128
Registers see secon 2.4.1
Isolaon 1000 Vdc
Conguraon 3 buon front keypad
Temperature operaon from 0 to 50 ºC
storage from -20 to +70 ºC
Installaon allowed at ‘Opt.1’, ‘Opt.2’, ‘Opt.3’
Power
Opt.2
Opt.1
Opt.3
ABCDE
ABCDE
Signal
ABCDE
Rear view DPF20
Module Connecons
Module S2 - RS-232 ASCII
Terminal A Tx2
Terminal B Rx2
Terminal C Tx1
Terminal D Rx1
Terminal E GND
Table 16 - Connecon terminals
Opon R2, R4, R6
Output type relay (2, 4 and 6 relays)
Relay type 3 contacts (NC, NO, common)
Maximum current 6 A per relay (resisve load)
Maximum voltage* 250 Vac connuous
* terminals approved for 300 V (as per UL1059, groups B and D) and
160 V (as per VDE at CAT-III and polluon degree 3).
Isolaon 2500 Ve
Type of terminal plug-in screw terminal
pitch 5.08 mm
Installaon allowed at ‘Opt.1’
Module R2 occupies Opt.1 (2 relays)
Module R4 occupies Opt.1 and Opt.2 (4 relays)
Module R6 occupies Opt.1, Opt.2 and Opt.3 (6 relays)
Modules R2, R4 and R6 provide 2, 4 and 6 relay outputs, to install in
DPF20 digital panel meters.
Conguraon is performed from the frontal keypad of the meter, by
seng the parameters at the ‘Opt.1’ conguraon menu (not from
the alarm conguraon menu (‘ALr.1’, ‘ALr.2’ o ‘ALr.3’) of the instru-
ment).
The menu allows to congure the setpoint, hysteresis, independent
acvaon and deacvaon delays, and a second setpoint to create
alarm windows.
Only 1 modules R2, R4 or R6 can be installed in a single instrument,
as the are not compable with themselves (2 modules R2 are not ac-
cepted) and are not compable with modules R1, T1 or SSR.
Modules R2, R4 and R6 are isolated against all other instrument cir-
cuits.
Modules R2, R4 and R6 can be ordered pre-installed into a DPF20
digital panel meter, or standalone for delayed installaon, as they do
not require soldering or special conguraon.
2.6 Modules R2, R4 and R6
Rear view DPF20
Power
Opt.2
Opt.1
Opt.3
A B C D E F
Signal
G H I J K L
MNOPQR
Relay Common Normally Open (NO) Normally Closed (NC)
relay 1 A B C
relay 2 D E F
relay 3 G H I
relay 4 J K L
relay 5 M N O
relay 6 P Q R
Table 17 - Connecon terminals

Omega DPF20 Series Specifications

General

Brand	Omega
Model	DPF20 Series
Category	Measuring Instruments
Language	English