WTS-4181
Technical Data
DESCRIPTION
PART No.
WTS-4181
Delay Time
Mode
Select
Status
LEDs
The WTS-4181 Delay Timer provides a
wide variety of timed based switching
functions necessary for specilized
applications.
The WTS-4181 unit is located in the
relay panel and connected in between
the signalling switch and the relay (or
relay scanner input).
Several time delayed siwtching modes
are available.
-Timed ON (ON and Delay OFF)
-Egress (Delay OFF upon OFF)
-Emergency Power-Up (Delay ON)
-Timed ON with 24v input
Please refer to the WTS-4181
Applications Table for details of the
various switching modes available.
24vac (White)
24vac (Blue)
Relay Output
On
WTS-4181
SW Input
SW Return
24vac Input
24vac Rtn
Delay Timer with 2-wire Output
WTS-4181 -Delay Timer Unit
Delay Time Adjustment
Connect Douglas switches
and/or 24V signal to input of
unit. Refer to Mode table
for specific functions.
Output terminal
24vac (Blue)
24vac (White)
Relay Output
Delay Time
Mode
Select
Status
LEDs
Connect output to relay or
relay scanner input.
Range & Mode Switches
Use dip switches to select ranges.
Ranges are: secs. 0-99 mins and 0-9.9 hrs
Mode switches select function of unit.
Sw
WTS-4181
SW Input
SW Return
24vac Input
24vac Rtn
Transformer
Input
Power: 24VAC : 25 mA
(power consumption does not include
power required for switching relays)
Class 2 low voltage device.
Douglas relay switches (all models)
24VAC Input
Output
One Douglas 2-wire relay output.
A maximum of 4 relays can be
connected in parallel to the output OR
the output can be connected to a relay
scanner input.
Delay Time Adjustment
The WTS-4181 has 3 time out ranges:
0-99s, 0-99m and 0-9.9 hrs.
The delay time is adjusted with 2 rotary
switches. To set a delay of 53 minutes
select the 0-99m range, set the large
digit rotary to 5 and the small digit rotary
to 3.
The delay time is accurate to ±1%.
An LED will flash when the unit is delay
timing.
Option Selection
DIP switches built into the unit are used
to select the various delay time options.
Invalid combinations will result in all
LEDs on the unit to flash.
Status Indication
The status LEDs indicate selected
range and invalid combinations by all
flashing at once.
Environment
Delay Time
Mode
Select
Status
LEDs
24vac (Blue)
24vac (White)
Relay Output
Output connected
to Relay
On
CONNECTIONS
Breaker
Connect 24VAC to power unit.
24V power to be the same 24V
supplying relay or relay scanner input.
Large Small
Digit Digit
WTS-4181
SW Input
SW Return
24vac Input
24vac Rtn
Input Terminals
H
Power terminals
On
Delay times have 2 digits.
Use rotary switches to select delay time.
Eg: For a value of 25 set
large digit to 2 and
small digit to 5.
SPECIFICATION
24VAC W
B
Indoors, stationary, non-vibrating, noncorrosive atmosphere and noncondensing humidity.
Ambient operating temperature:
-15F to +140F (-25C to +60C)
Relay
Lights
DIMENSIONS & MOUNTING
The input circuit can be different
than that of the output circuit.
H
Breaker
Sw
Transformer
WTS-4181
SW Input
SW Return
24vac Input
24vac Rtn
Delay Time
Mode
Select
Status
LEDs
On
Isolated Input
24vac (Blue)
24vac (White)
Relay Output
Output connected
to Input of
Relay Scanner
24VAC W
B
Relay
The WTS-4181 mounts onto standard
35mm DIN rail.
In most cases, locate the WTS-4181 in
the relay panel near the relay and
transformer.
Side
View
Plan View
Lights
1.5"
(39)
WRS-2224
Scanner
w
B
B54B321
4.0"
(103)
Delay Timer
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1.75"
(45)
Time-out
Sw ON
Closed
24v input enables
the time-out function.
Sw ON
Closed
Option
99m
99s
24 V
Input
9.9h
Douglas
Sw Input
Mode
Technical Data
WTS-4181
Delay Timer with 2-wire Output
Range
Output
Only 1 Range sw on
to select this mode.
Range sw on
selects range
ON, then Delay OFF
ON, then Delay OFF with Flick warn
• Lights are switched ON; Time-Out mode is used to automatically switch lights OFF after a set time period.\
• The 24V input must be closed (24vac applied) to "enable" the Time-Out mode.
Use this feature to enable time-out switching only during unoccupied periods.
Switch ON, Delay OFF Reset with On Signal
Sw OFF, Cancel Delay OFF
Removal of Enable Input
Off with Flick warn
Power
During 5 min flick delay,
the first signal from the sw
cancels the impending off.
Sw Input On
Off
Enable Close
Input Open
Output
delay t
delay t
delay t
On
Off
Egress
Sw OFF
Closed
24v input enables
the egress function.
Sw OFF
Closed
delay t
delay t
Only 1 Range sw on
to select this mode.
Range sw on
selects range
5 min flick
delay
Delay OFF
Delay OFF with Flick Warn
• Lights are switched OFF; Egress mode delays the lights OFF signal to permit egress.
• The enable input must be closed (24vac applied) for the Egress (Delay-OFF) mode to work.
Switch OFF, Delay OFF
Cancel with OFF Signal
Sw ON, Cancel Delay Off Removal of Enable Input
Delay OFF with flick
Power
During 5 min flick delay,
the first signal from the sw
cancels the impending off.
Sw Input On
Off
Enable Close
Open
Input
On
Output
Off
delay t
delay t
delay t
delay t
5 min flick
delay
delay t
Emergency
Power-up
no Sw
Closed
no Sw
Closed
All Range Sws on
to select this mode.
Operates in 0-99s
range only.
Delay ON
Delay ON with Repeat
• Power is lost and emergency power is brought on line. A remote contact can be used to signal the system to switch lights ON.
• To ensure remote contact has effect, use repeat option. If no remote contact available, use panel 24vac power without repeat.
• The delay time should be sufficient (3 sec or more) to permit the lighting system controls to come "on-line".
Input ON, Delay ON
Power Up, Delay ON
Input OFF, Cancel Delay ON
Input ON, Delay ON with Repeat
Power
Sw Input On
Off
Enable Close
Open
Input
On
Output
Off
Switch input has no effect
Switch input has no effect
delay t
Timed ON
by 24V Input
Switch input has no effect
delay t
no Sw
Closed
no Sw
Closed
Switch input has no effect
delay t
delay t
Contact input
0-99m range.
Contact input
0-9.9h range.
delay t
delay t
ON, then Delay OFF
ON, then Delay OFF with Flick Warn
• Switch input is inactive, the 24V input controls the output; Use to interface contact closures to a Douglas relay or system.
Power
Sw Input On
Off
Contact Close
Open
Input
Output
On
Off
Delay Timer
Input ON, ON & Delay OFF
Input OFF before delay over
Input ON, Delay OFF with flick
Switch input has no effect
Switch input has no effect
Switch input has no effect
delay t
delay t
delay t
Open after
delay has
no effect
5 min flick
delay
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Input OFF, Delay OFF / Input ON, Delay ON
This mode only:
All off, 99s range
delay t
delay t
(in sec)
delay t
(in min)