Front View; Rear View; Power Connections; Signal Connections - Omega DP20 User Manual

DP20 Economical Multisignal meter

1.2 Front view

Alarm 1
Alarm 2
Logo
Key 'UP'
Key 'LE'
'Fast access'
(see section 1.28.4)

1.3 Rear view

Option 2
1 2 3 4 5
Signal
(see section 1.5)
Detail of the plug-in screw terminals provided with
the instrument. The instrument is provided with all
terminals needed, both male and female.

1.4 Power connections

Earth connection -
instrument does not need earth
connection for correct operation
nor for compliance with security
regulations. Terminal 9 is not
connected to any internal circuit
and is provided only as a safe
place for earth wire.
Fuse - As requested by security regulation 61010-1, add a protection
fuse to the power to act as disconnection element, easily accessible
to the operator and identified as a protection device.
250 mA time-lag for power voltage > 50 Vac/dc
400 mA time-lag for power voltage < 50 Vac/dc
Units
Key 'SQ'
'Configuration menu'
(see section 1.28)
Option 1
8 9 0
Power
(see section 1.4)
The
8 9 0
+
~
Power 18 to 265 Vac/dc
-
~

1.5 Signal connections

Signals up to 600 V and 200 V (AC and DC) must be connected at
terminals 1 and 4. Signals for 5 A current (AC and DC) must be
connected at terminals 3 and 4. All other signals must be connected
between terminals 2 and 4. Terminal 5 is a 'multifunction' terminal,
configurable with one of the following functions :
• +15 Vdc excitation voltage (Vexc) for process signals
• +5 Vdc excitation for potentiometer signals
• connection for the Pt100 third wire compensation
• external contact 'EK' function
Units
To select the terminal 5 function, select the position of internal
jumper 'T' (see section 1.9).
1 2 3 4 5
1.6 Mechanical dimensions in mm (in)
48
(1.89)
1.7 Installation and start-up
Open the instrument as indicated at section 1.25 and access
1.
the internal board.
Select jumpers 'S' for the signal range required (see section
2.
1.9).
3. Select jumper 'T' to assign to multifunction terminal 5 the
required functionality (see section 1.9).
Close the instrument ad indicated at section 1.25.
4.
5. Connect the input signal and the power supply as indicated at
sections 1.4 and 1.5.
Enter the 'configuration menu' to configure the instrument
6.
(scaling, alarms, ...) (see section 1.28).
5
{
Vexc, Pt100 3 wire, Pot+,
multifunc.
'EK' external control
{
neutral, 0 V, common
Common
{
5 A
5 Aac, ±5 Adc
~
{
Vac, ±Vdc, resistance, mA, pot,
~
Signal
thermocouple+, Pt+, Ni+, PTC+, NTC+
{
600 Vac, 200 Vac
~ ~
HV signal
±600 Vdc, ±200 Vdc
Units
96
16
(3.78)
(0.63)
44
(1.74)
Instruction Manual
75 8
(2.95) (0.31)
Panel
cut-out
92
(3.63)