Keyscan CA250B, Technical Instructions

Page: 131 / 140

Keyscan Inc. – Technical Guide (PC109x - 04.15) 131
Figure 91 – Pre-alert Relay CA4500B/OCB-8 Connections
CA450 0B
Control
Boa rd
Cut Vie w
OCB-8 ribb on cab le
connects to
CONTROL 2.
red stri pe
C
O
N
T
R
O
L
1
C
O
N
T
R
O
L
5
OCB-8 powere d
through rib bon
cable with J1
Relay P ower set
on ACU.
Exte rnal pre-aler t device
mounted at do or.
DC Sup ply
- +
KI-00231E-10-14
C
O
N
T
R
O
L
4
S1
TB1
J1
OUTPUT
CONTROL
BOARD
K1 K2 K3 K4
K5 K6 K7 K8
LE D ON =
RELA Y
E NE RGIZ ED
O N
1
2
3
4
5
6
7
8
ACU
EXT
12V
GND
H1
TB2
TB3
TB4
OCB8
P C1102
RELAY
REV.
NORMAL
KEYSCAN
INC.
Aux
Output
5
(DIP
Switch 1)
Aux
Output
6
(DIP
Switch 2)
Aux
Output
7
(DIP
Switch 3)
Aux
Output
8
(DIP
Switch 4)
Pre-
Alert
1
(DIP
Switch 5)
Pre-
Alert
2
(DIP
Switch 6)
Pre-
Alert
3
(DIP
Switch 7)
Pre-
Alert
4
(DIP
Switch 8)
Relay
Power
Not e
DIP switches set
rela ys for normal or
reverse, as
indi cated by the
arro ws.