Master Catalog — Gems Sensors & Controls - L-7

PROGRAMMABLE RELAYS
How To Order
Specify Part Number based on output.
Description - Hybrid Relay

Switching Mode

Triac Output, AC Operation

Part Number
54820

Programmable,
N.O., N.C.,
or latching

Reed Switch Output, AC/DC Operation
Optional Rail Mounting Clip

54825
61783

- Stock Items.

Typical Wiring

Programming the GEMS Programmable SAFE-PAK
Normally Open Load Operation: Switch closure to terminals 5 and 7 turns
Programmable Relay " on " and energizes load. Same switch opening will turn " off "
Programmable Relay and de-energize load. Terminals 6 and 8 are not used.

SENSOR
SWITCH
N.O.

Normally Closed Load Operation: Switch closure to terminals 6 and 7 turns
Programmable Relay " off " and de-energizes load. Same switch opening will turn
" on " Programmable Relay and energize load. Jumper must be connected between
terminals 5 and 7...terminal 8 is not used.

Note: Latching function should
be accomplished on sensor input side of the
LOAD CONNECTED
LOAD CONNECTED
1
1
Programmable SAFE-PAK.
NoTOlatching
circuit
TERMINAL 3 function is advised on 2theTOoutput
TERMINALpower
4
2
SAFE-PAK
SAFE-PAK
+ VDC
3
+ VDC
3
side.

JUMPER

Note: Latching function should be accomplished on sensor input side of the
Programmable SAFE-PAK. No latching function is advised on the output power4 circuit
2
side.
3

CR

8
+ VDC
7

1
6 SAFE-PAK 42
3
5
34

INDUCTIVE
" ON "
LOAD
SENSOR
COM.

1

4

2

3

1

N.O.

8

6

4

2

7

5

3

1

F1-SLO-BLO, .5 AMP
LOAD
VAC
OPERATING
VOLTAGE

110 VAC SOURCE AND
LOAD VOLTAGE
JUMPER

LOAD

Refill OperationLOAD
Shown
N.O. (DRY)
HI

SENSOR
SWITCHES
JUMPER

8

6

4

2

7

5

3

1

F1-SLO-BLO, .5 AMP
LOAD
VAC
OPERATING
VOLTAGE

LO

LOAD

N.C. (DRY)

N.C.
N.O.

8

6

4

2

7

5

3

1

F1-SLO-BLO, .5 AMP
LOAD
VAC
OPERATING
VOLTAGE
LOAD

SENSOR
SWITCHES
110 VAC SOURCE AND
LOAD VOLTAGE

SAFE-PAK

HAZARDOUS
AREA

*

COM.
INDUCTIVE
*VARISTORLOAD
(VOLTAGE TRANSIENT PROTECTION)

P.C.
INPUT

NON-HAZARDOUS
AREA

8

6

4

2

7

5

3

1

120 VAC

SAFE-PAK
SENSOR *

Programmable SAFE-PAK, P/N 54825, providing simple
on-off functions for hazardous location, and interfacing
with TTL or AC logic input of programmable controller.
*Temperature, pressure, position, flow or level.

MOV

ELECTRONIC PRODUCTS

HAZARDOUS
AREA

3

LOAD CONNECTED
TO
2 TERMINAL 4
220 VAC + VDC
1

INDUCTIVE
LOAD

AC

5

LOAD

" OFF "
SENSOR

1
SAFE-PAK
2
P/N
3
54820 4

7

F1-SLO-BLO, .5 AMP
LOAD
VAC OPERATING
VOLTAGE

Connecting to Programmable Controllers

When these units are used in high-noise electrical systems, connection of a
NON-HAZARDOUS
MOTORacross terminals 3 and 4 is
varistor (GeneralHAZARDOUS
Electrical G-MOV
or equivalent diode)
AREA
AREA
STARTER
recommended. Consult factory for recommended varistor
protection.

SAFE-PAK

2

1

Load Consideration

LOAD CONNECTED
TO TERMINAL 3

4

4

4

Latching " B " Operation: Momentary
switch closure to terminals 5 and 7 turns
INDUCTIVE
Programmable Relay " on "
and
energizes
load. Load remains " on " until
the N.C. COM.
switch
LOAD
INDUCTIVE
COM.
LOAD
terminals 7 and 8 opens. The Programmable Relay turns " off " and load
is
de-energized. Terminal 6 and jumper are not used.

1
2
3
4

6

LOAD

SENSOR
JUMPER
SWITCH

Latching " A " Operation: For refill control, momentary switch closure to terminals 5
and 7 turns Programmable Relay " on " and energizes load. Load remains " on " until the
Programmable Relay turns " off " with a momentary switch closure at terminals 6 and
7. The load is then de-energized. Jumper must be connected between terminals 7 and
8. For pump-down, reverse wires on terminals 5 and 6.

8

AC

NON-HAZARDOUS
AREA

MOTOR
STARTER

" OFF "
SENSOR

HAZARDOUS
AREA

CR
8

6

4

7

5

3

2

*1

SAFE-PAK
" ON " Programmable SAFE-PAK / p2of2 / 3-APR-14
SENSOR
*VARISTOR

220 VAC

Installation and maintenance must be in accordance
P.C. and the applicable
with the National Electrical Code
INPUT
GEMS
INSTRUCTION,
INSTALLATION
and SERVICE
NON-HAZARDOUS
AREA
Bulletin
available at www.gemssensors.com
8

6

4

2

7

5

3

1

Visit www.GemsSensors.com for most current information.
SENSOR *

SAFE-PAK

120 VAC

L-7
http://ecatalog.gemssensors.com/ecatalog/relays-barriers/en/54820 http://ecatalog.gemssensors.com/ecatalog/relays-barriers/en/54825 http://ecatalog.gemssensors.com/ecatalog/relays-barriers/en/61783 http://www.gemssensors.com http://www.GemsSensors.com
Master Catalog — Gems Sensors & Controls

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