Hired-Hand Emergency Back-Up and Alarms: SCS Curtain Back-up Harness User Manual
Curtain back, Purpose, Directions
HIRED-HAND, INC. • 1733 Co Rd 68 • Bremen, AL 35033 • Phone 1-800-642-0123 • Fax 256-287-2000
Part No. 4801-5142
Purpose
The Back-up Machine Control Harness places a PowerTrak in the ‘open’ position in the event of a
back-up condition of the control panel
Directions
1. Disconnect electrical power from PowerTrak and Controllers.
2. Install the Back-up relay inside the Farm Hand SCS Panel to the left of the power transformer by using
the self-adhesive backing on the relay.
3. On the Controller that is to receive the Back-up Machine Control Harness, disconnect control wires
from the Controller (Common, and OPEN).
4. Connect control wires from the Back-up Machine Control Harness to the controller. Connect Yellow
wire to Common. Connect Brown wire to Open. Refer to diagram.
5. Connect wires having connectors from PowerTrak to Back-up Machine Control Harness. Connect
Yellow wire to Common. Connect Brown wire to Open. Refer to diagram.
6. Replace the four pin harness connecting the Printed Circuit Board (PCB 162 – SCS 16 board) to the
PCB 163 (Back-up board) with one connected to the back-up harness. Refer to diagram.
7. Connect the blue wire to the top of the SCS 16 board labeled Back-up. Connect the blue wire to the
desired cooling Stage.(COOL 1, COOL 2 or COOL 3).
8. Installation
complete.
!!!!
Warning
Curtain Back
Curtain Back
Curtain Back
Curtain Back----up for SCS Panel
up for SCS Panel
up for SCS Panel
up for SCS Panel
PowerTrak
From
PowerTrak
To
Controller
!!!!
Warning
This setup will override main Controller and
open the PowerTrak any time the SCS
Panel is in Back-up operation.
The curtain machine will only open when the
back-up stage connected to it is called for.
J18
J19
J16
G1
R5
J24
J22
J23
ULN2803A
U8
ULN2803A
U5
R21
R22
R20
R28
R29
R30
G2
R6
TZ3
G3
R7
TZ1
R4
ULN2803A
U6
R25
R26
R27
TZ2
J8
J7
J9
J2
R24
R23
J21
J20
J17
J1
J3
R9
R8
ULN2803A
U7
R19
R14
R10
74HCT373
U3
R114
R111
R112
R110
R109
R108
R107
X101
C103
C104
J4
J5
J6
J10
J11
SWX1
R18
R13
R12
R11
R3
R2
R1
C4
X1
C3
C5
PIC16C63
U1
75176
U2
C6
R15
MOV6
MOV5
J25
PIC16C73A
U102
93LC66
U104
C101
MC14489
U105
J105
R106
U103
ULN2803A
75176
U101
C102
J12
J13
J14
J15
74HCT373
U4
Q1
R16
J26
C9
BR3
BR1
C11
AD
J
OU
T
IN
VR4
D22
R
LY104
RLY
101
RL
Y102
RL
Y103
RLY105
J104
J102
J109
R31
R32
J101
J107
R101
R102
R105
J106
J103
R113
R103
R104
J110
J108
D4
D3
D1
D7
CUT-OUT
CUT-OUT
CUT-OUT
CUT-OUT
CUT-OUT
CUT-OUT
RELAY STRIP 1-4
B
.
C
r
i
d
e
r
C
o
p
y
r
i
g
h
t
(
c
)
2
0
0
0
H
i
r
e
d
H
a
n
d
,
I
n
c
.
LOCAL NET ADDRESS
COOL3
COOL2
COOL1
HEAT
BACKUP SYSTEM
HE
AT
CO
OL
3
CO
OL
2
CO
OL
1
BACKUP SYS
TEM
L1
EA
RT
H
AC POWER (
<24 V)
L2
EARTH
L2
L1
AC POWER (<24 V)
NC
+
-
LOCAL NET
NC
-
+
LOCA
L NET
RELAY STRIP 5-8
RELAY STRIP 9-12
RELAY STRIP 13-16
P
C
B
1
6
2
R
e
v
'
A
'
H
i
r
e
d
H
a
n
d
,
I
n
c
.
C
o
p
y
r
i
g
h
t
(
c
)
2
0
0
0
B
.
C
r
i
d
e
r
P
C
B
1
6
3
R
e
v
'
A
'
STATUS LEDs
TRANSMIT
RECIEVE
NORMAL
POWER
BACKUP
ALA
RM
SENSOR
1
SENSOR
2
B
L
A
C
K
C
O
M
W
H
I
T
E
S
E
N
S
O
R
2
E
N
A
B
L
E
O
N
=
E
n
a
b
l
e
d
O
F
F
=
D
i
s
a
b
l
e
d
N
O
N
C
W
H
I
T
E
B
L
A
C
K
SCS 16 Board
Harness
(Common)
(Open)
(Open)
(Common)
Stage Connection