1.3 ELECTRICAL CONNECTIONS
CAUTION: POWER MUST BE OFF WHILE WIRING CONNECTIONS ARE BEING MADE.
CAUTION: Do not exceed the specified supply voltage rating. Permanent damage not covered by the warranty
may result.
CAUTION: To maintain type 4X rating of the enclosure, 1/2 NPT conduit fittings must have a UL type 4X out-
door rating.
Note:
Installation must be made in accordance with local codes and regulations. When fishing wire through the conduit
connection do not allow the wire to touch or press on components on the boards. Damage to the circuitry may result.
Electrical connections are made to the removable terminal blocks inside the enclosure. Remove the top back cover, do
not remove bottom cover. Feed stripped and tinned leads through the conduit opening and connect them as shown in
Figure 3. The EDA provides two 1/2˝ NPT female ports for conduit connection. The conduit connections must be made
such that condensation is not allowed to enter the sensor housing. If necessary install a conduit breather drain in a sep-
arate conduit body to prevent buildup of moisture. It is recommended that shielded twisted pair wire be used for the
transmitter output option if the potential exists for interference from external noise sources. When replacing top back
cover tighten screws to 2 ±.25 in. lbs.
Figure 3: Wiring
An external power supply of 12-28
VDC/AC with minimum current capability
of 200 mA must be used to power the unit.
The power supply connection is not polari-
ty sensitive so the positive and negative
connections may be made to either termi-
nal of CONN9 terminal block.
For voltage output option, connect the volt-
age receiver (-) to terminal 1 and voltage
receiver (+) to terminal 2 of the CONN10
terminal block. For current output option,
connect the current receiver (-) to terminal
3 and current receiver (+) to terminal 4 of
CONN10 terminal block. DO NOT APPLY
EXTERNAL POWER TO CONN10 TER-
MINALS - PERMANENT DAMAGE NOT
COVERED BY WARRANTY WILL
RESULT.
Loads can be connected to connectors CONN7 and CONN8 terminal blocks based on the Control settings:
• For single set point mode (
CtrL-1SP
), connect the Load to
SP1
relay (CONN7).
• For two set points mode (
CtrL-2SP
), connect the Load1 to
SP1
relay (CONN7) and
Load2 to
SP2
relay (CONN8).
• For single set point and alarm mode (
CtrL-SPAL
), connect the Load1 to
SP1
relay
(CONN7) and Load2 to
ALARM
relay (CONN8).
Wiring
An external switch or circuit breaker should be added to during the installation as a disconnecting device. The switch
or circuit breaker must meet the requirements of IEC 60947-1 and IEC 60947-3, shall disconnect all current carrying
conductors, and shall not interrupt the protective earth ground. The disconnecting switch or circuit breaker must be
marked or labeled with the symbols “I” for on and “O” for off, per IEC 60417-5007 & IEC 60417-5008 and shall be
marked as “Disconnecting Device”. Do not position the PLS in a space where it is difficult to operate the disconnecting
device that provides power. 300V @ 90°C 18 AWG/0.75 mm
2
wiring with PVC or equivalent insulation with 94-V0 or FV-
0 flammability rating is recommended for the switch outputs and power. Terminal blocks rated for 16-22 solid or strand-
ed copper conductor. 6 lb in is suggested tightening torque.
5
SP1
RELAY
5A 250 VAC FOR LOADS USING 120/240 VAC POWER
1A 32 VDC FOR LOADS USING 30 VDC POWER
375 mA 250 VAC
LOAD 1
LOAD 2
LINE
INPUT
12 TO 30 VDC/AC
POWER
SP2 OR ALARM
RELAY
Description
Direct current
Alternating current
Protective conductor terminal
On (supply)
Off (supply)
Symbol
Explanation of Symbols:
~
Publication
IEC 50417 - 5031
IEC 50417 - 5032
IEC 50417 - 5019
IEC 50417 - 5007
IEC 50417 - 5008
As a permanently installed piece of equipment, a power disconnect switch, circuit breaker, or other
approved disconnect device must be installed in close proximity to the installed board and within
easy reach of the operator. This disconnect device must include a label indicating its function as a mains disconnect. A
circuit breaker or fuse device is recommended (see Figure 3).
WARNING
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