NSi Industries E502T - Manual (Page 3)

MODEL#:
E502T
The E502T is an OFF delay timer which allows for a set time interval to elapse before the load connected to the timer is powered OFF. An external maintained contact switch (by others) is used to turn the
load ON. When the external switch is opened, the timing starts and the loads turn off at the end of the interval. If an external momentary switch is used for unit operates as an interval countdown timer.
It has an adjustable rotary dial which contains 32 precisely defined positions, allowing for interval durations from five (5) seconds minimum to 3 hours maximum. Continuous ON and continuous OFF
settings are included.
POwEr
rEquirEMEnts:
Inputs: 120 and 240 VAC (+10% -15% at 60 Hz)
Outputs: SPDT relay with 20 Amp N.O. and 10 Amp N.C. general purpose at 120,240 VAC; N.O. 1 HP at 120 VAC, 2HP at 240 VAC
EnvirOnMEntaL:
Operating Temperature Range: 32°F to 122°F (0°C to 50°C). Operating Temperature Range for mechanism: -20°F to 140°F (-29°C to 60°C).
Operating Humidity Range: Relative humidity up to 100%
Water Resistance: The control will be capable of direct low-pressure water wash down according to NEMA 4X specification
COntaCt
ratinG:
EnCLOsurE: NEMA type 4X (indoor use only) enclosure standard (E502T). Watertight cover with gasket is flame retardant UV stabilized and non-metallic. In grey.
MOuntinG: Control is compatible for mounting to Tork’s NEMA 4X nonmetallic enclosure
DiaLs: Sealed from external access
MaintEnanCE:
Cleaning: Use only mild detergent and water
to dean the enclosure
INSTALLATION & WIRING INSTRUCTIONS
Note: Wiring connections are made to a six-position: terminal block.
All terminals accept AWG #18 to AWG #12 wire.
1. Turn off all power to the timer circuit at the distribution panel before
beginning the installation.
2. The E502T box contains knockouts on two sides. Determine the most
convenient way to mount the box to the conduit and remove the
appropriate knockout. To secure the box to a fixed location, use at
least two of the four box mounting knockouts located on the back of
the box.
3. Wire timer for either 120 VAC or 240 VAC as shown by the wiring
diagram. Wire the load to the timer as shown in the wiring diagram,
noting the contact load type and ratings shown.
4. Connect optional trigger contacts to the timer as shown in the wiring
diagram.
5. Securely attach the timer to Tork’s NEMA 4X (for indoor use only)
non-metallic enclosure with the included screws
®
OFF DELAY TIMER
VOLTAGE LOAD TYPE N.O. CONTACTS N.C. CONTACTS
120-240 VAC Resistive 20 A 10 A
120-240 VAC General Purpose 20 A 10 A
120 VAC Motor 1 HP ¼ HP
208-240 VAC Motor 2 HP ½ HP
120-240 VAC Pilot Duty 470 VA 275 VA
! CAUTION !
RISK OF ELECTRIC SHOCK
Disconnect power at main panel prior to installing
or servicing this lighting control or the equipment connected to it.
TRIGGER T
LOAD
START NC NO COM 240V/L1 120V NEUT/L2
120V
L N
FOR 240V
L2 L1
EXTERNAL
TRIGGER
(CONTACTS)
SPDT
120V
L N
L1 L2
FOR 240V APPLY ONLY ONE VOLTAGE
FOR 120V
(L)
FOR 240V
(L1)
120V EXTERNAL TRIGGER
(CONTACTS)
FOR 240V
APPLY ONLY ONE VOLTAGE
TRIGGER
120V
START
LOAD
SPDT
NC NO COM 240V/L1 120V NEUT/L2
FOR 240V
FOR 240V
(L1)
FOR 120V
(L)