WLCP-36WST-S3

WLCP-36WST-S3
WRS-2224 Relay Scanner
Switch Inputs
Input Connections
Connect the external group switching devices to the scanner's group
inputs. If you are connecting 24V contact switching devices other
than a Douglas switch or time clock, you must first configure the
input for a 24V contact. Use the keyboard on the scanner, as
detailed in 'Input Configuration' on page 48.
A maximum of 6 switching devices can be connected in parallel to
the same master input, with a maximum wire length of
2000'/600m if using 18 AWG wire.
After all the output relays have been assigned to lighting loads,
determine which relays are to be switched together as groups.
Use the keypad built into the front surface of the scanner to assign
relay groups to be switched by each input. Refer to the scanner
PROGRAMMING pages of this manual and the directions printed
on the scanner for details.
Switching with Momentary
Contacts that use Diodes
ON & OFF switching with contacts from another
device or system is best accomplished with
momentary type contacts that have a diode
connected in series (one contact and diode for ON
and another for OFF).
Momentary contacts that utilize diodes have 2
advantages:
1. It is possible to have repeat ON or OFF
commands. For example, during the night, an
OFF signal could be issued every hour to ensure
lights are swept OFF.
2. Douglas relay switches can be connected in
parallel for convenient override.
Momentary contacts with diodes mimic the
Douglas relay switch. Thus, the default input
configuration of the WRS-2224 scanner is for
the Douglas WR-8501 relay switch.
Switching with 24V
Momentary or Maintained
Contacts (no Diodes)
Inputs for the WRS-2224 can also be configured to
accept 24V signals that have no diode connected.
The signal can be momentary or maintained.
When using the 24V contact control, be aware
there are some restrictions. An input can be
configured to switch relays ON when 24V is applied
and OFF when it is removed. However, when this
is the case it is not possible to send repeat OFF
signals without an intervening ON signal. You can
also configure the input so that only OFF signals
are sent if a repeat signal is desired, although in
this case there would be no ON signal. Should
repeat OFF as well as ON signals be needed, then
two 24V contacts would be needed with two
inputs, one for the OFF signal and one for the ON.
Refer to 'Input Configuration Mode' on page 6 for
all the settings available for 24V contact control.
1
2
3
4
5
6
7
8
9
10
11
12
Momentary ON Contact
OFF Contact
ON
Diode
OFF
Diode
Master Sw Override
Red
Douglas switch OK with
momentary contacts.
NOT OK with maintained
contacts.
Maintained Form C
Contact Set
Coil
1
2
3
4
5
6
7
8
9
10
11
12
NO NC
COM
13
14
15
16
17
18
19
20
21
22
23
24
WRS-2224
Relay
Scanner
13
14
15
16
17
18
19
20
21
22
23
24
W B
1
2
3
Switch
Inputs
B 45
B
ON Diode
OFF Diode
Components WLCP-36WST-S3 1.1
page 46
(OR)
B
W
Tr
Douglas Relay Switches
The inputs of the WRS-2224 scanner
are compatible with all models of
Douglas relay switches. However, If
you are connecting a different switch
type, you must re-configure the input
before connecting the switch. Follow
the procedure described in the 'Input
Configuration' section of this manual.
When connected to the scanner, the
LEDs of a Douglas switch will show the
state of the relay group. If any of the
relays in the group are ON, the group
is defined as being ON and the red LED
is lit. Only when all of the relays in the
group are OFF is the group defined as
being OFF and the green LED is lit.
Take care when using Douglas WR-
8501 switches. The WR-8501 push
button switch will always send a signal
that is opposite to its displayed state. If
repeat ON or OFF control is desired, use
the WR-8001 rocker switch which is
able to select an ON or OFF signal.
Douglas Timer Automation
The inputs of the WRS-2224 scanner
are compatible with Douglas timers
such as the WTP-4408. When
connecting a Douglas timer to the WRS-
2224 scanner, the input must be
configured for a Douglas relay switch
(default).
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
WRS-2224
Relay
Scanner
Switch
Inputs
13
14
15
16
17
18
19
20
21
22
23
24
WR-8001 Rocker Switch
W B
1
2
3
B 45
B
Red
WR-8501 Pushbutton
Switch with
ON & OFF LEDs
Esc
WTP-4408
A B C D
1 2 3
1 2 3
4 5 6
0
5 A I H
5 A I H
47 58 69
7 0 8 9
Red
Red
Time Clock
Maximum:
6 switches
9
!
"#$%&
9
*
Clr
B
W
Tr
lighting controls