Omega Products RELAY-URM Installation Manual

R

Ome ga.com

TM

http://www.omega.com

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RELAY-U

M SERIES

Universal Relay Module

SPECIFICATIONS................................................................................................................................................................ 2

DESCRIPTION......................................................................................................................................................................3

POWER CONNECTION.......................................................................................................................................................3

INPUT CONNECTIONS – Relays 1-4.................................................................................................................................. 4

Figure 2: Input/Output Connection for Relay 1-4 .............................................................................................................. 4

OUTPUT CONNECTIONS – Relays 1-4.............................................................................................................................. 5

INPUT CONNECTIONS – Relays 5-8.................................................................................................................................. 5

Figure 3: Input/Output Connection for Relay 5-8 .............................................................................................................. 6

OUTPUT CONNECTIONS – Relay 5-8................................................................................................................................ 6

INPUT SIGNAL CONNECTIONS AND SETUP ................................................................................................................. 7

ACTIVE LOW INPUT SIGNAL (REVERSE ACTING )..................................................................................................... 7

Figure 4: Active Low Input Signal (Reverse acting)......................................................................................................... 7

Figure 5: Wiring for Active Low Signal for Relays 1-4 and Relay 5................................................................................ 8

Figure 6: Wiring for Active Low Signal for Relays 6-8.................................................................................................... 8

ACTIVE high INPUT SIGNAL (DIRECT ACTING ).......................................................................................................... 9

Figure 7: Active High Input Signal Hookup for Relays 1-5 – (Direct Acting)................................................................... 9

Figure 8: Active High Input Signal Hookup for Relays 6-8 – (Direct Acting)................................................................. 10

REMOTE SWITCH/CONTACT ACTIVATION:............................................................................................................... 10

REMOTE SWITCH/CONTACT FOR RELAYs 1-4:..........................................................................................................10

Figure 9: Wiring for Remote Switch/Contact Activation of Relays 1-4...........................................................................11

Figure 10: Wiring for Remote Switch/Contact Activation of Relays 5-8......................................................................... 12

REMOTE SWITCH/CONTACT FOR RELAYs 5-8:..........................................................................................................12

Figure 11: Remote Switch/Contact Activation of Relays 6-8 .......................................................................................... 13

POWER SUPPLY:............................................................................................................................................................... 13

MOUNTING:....................................................................................................................................................................... 13

Figure 12: Mounting configurations................................................................................................................................. 14

Panel cutout dimensions....................................................................................................................................................... 15

Figure -13. Panel Cutout dimensions ............................................................................................................................. 15

Warranty:.......................................................................................................................................................................... 16

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SPECIFICATIONS

(Typical @ 25C and rated supply voltage unless otherwise specified)

RELAY SPECIFICATIONS:

Type: Electro-mechanical relay, SPDT
Current Rating = 15 ampere
Switched voltage = up to 250vac, 18vdc
Coil Voltage = 5vdc
Operate Time (typical) = 10 Milliseconds
Release Time = 5 Milliseconds
Mechanical Life Expectancy = 10million operations
Temperature Rise = 25C (45F) at nominal coil voltage.

OUTPUT CONNECTIONS:

Type = Euro style Pluggable connectors
Terminals = Screw type
Terminal Spacing = 5mm (0.196”)
Stripped length = 6mm (0.236”)
Current Rating = 15 ampere
Wire Size = AWG22-14
Contacts: Normally open, Normally closed, Common

INPUT CONNECTIONS:

Type = Euro style Pluggable connectors
Terminals = Screw type
Terminal Spacing = 3.51mm (0.137”)
Stripped length = 7mm (0.275”)
Current Rating = 8 ampere
Wire Size = AWG28-16
Input Signal = 5vdc to 24vdc
Relay activation on: Active High, Active Low, Contact closure

INPUT SIGNAL:

Input Voltage High: 5vdc (Minimum) at 10 milliamp
Input Voltage Low: 0.3vdc (Maximum)

POWER SUPPLY:

Universal Input = 100vac to 240vac
Power = 25 watts (5Vdc) -- Standard
Over Voltage Protection = 115 - 135% of output
Leakage Current = Less than 0.5ma
Efficiency = 75% to 78% typical
Output termination = Euro style screw terminal
Standard Auxiliary Output: 5Vdc @ 3 amp
Dual Supply Output Option:
(5Vdc @ 1A, 12Vdc @ 1A),
(5Vdc @ 0.2A, 24vdc @ 0.5A)

DIMENSIONS:

Case: 4.5"(L) x 2.7"(W) x 5.5"(H)
Bezel size: 3.0"(W) x 5.75"(H) x 0.06"(T)

24vdc (Maximum) at 10 Milliamp

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DESCRIPTION

Relay-URM series relay module is a very versatile instrument that is used for switching up to
eight 15 ampere loads using low level input signals from PLCs, process controllers, indicators,
motor starters etc. Its has extremely flexible inputs which will accept a wide variety of control
signals. Also, the inputs are designed for activation of output relays on direct acting or reverse
acting signals. Similarly, input signals can range from 5vdc to 24vdc. Conditioning of input
allows open collector or logic level inputs (e.g. TTL level signals) from PLCs or controllers to be
used for switching output relays. In addition to working with control/logic level signals, another
very useful feature of URM is activation of output relays on contact closure.

Each input provides the option of optical isolation from others as well as from URM’s control
circuit. Thus different instruments (PLCs, Indicators, Motor Starters etc) can switch relays in a
single URM without interfering with each other or causing any ground loop problems. For
example, relays 1-4 could be switched by a Temperature Monitor with alarm outputs where as
relays 5-8 could be used by a PLC for its control functions.

Many process control instruments have low power relays which provide contact closure for low
amperage switching but are not suitable for handling heavy loads. In such applications, Relay­URM series comes in handy. Simply connect the low power relay contact output to Relay-URM
unit and instantly you have the capability of up to eight 15 ampere load switching relays.

Input and output connections on URM-Relay series are made through euro style pluggable
connectors which are conveniently located on the top and bottom of the unit. Screw-in terminals
allow for quick connect/disconnect of wires.

The unit is housed in a versatile enclosure which can be configured for mounting on a DIN rail
or on a wall. If desired, the same enclosure can be panel mounted with Relay, AC and DC
supply status visible on the front. LEDs on the front panel turn on when a relay is energized.

Two different versions are offered in this series. First one is URM-Relay-400 which has four
relay outputs. The second one is URM-Relay-800 which has eight relay outputs. Both units
come with a built-in universal power supply. It operates from 100vac to 240vac. In addition to
providing power to internal electronics and relays it can also provide optional power for external
applications by the user.

POWER CONNECTION

Power is connected through the 3­terminals labeled 12, 13 & 14 (as shown in
the adjacent picture) on the Input
connector located at the bottom of the unit.
Terminals 12 and 13 are AC-Line 1 and
AC-Line 2 inputs, respectively, where as
terminal 14 is Ground. Make note that it is
very important that the Line inputs and the
power ground are not switched. Doing so
will permanently damage the instrument.
Refer to the picture for proper connections.

NOTE: WHILE MAKING POWER CONNECTION TO THE UNIT, MAKE SURE

THAT AC POWER LINE L1 OR L2 IS NOT ACCIDENTALLY

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