9
installation
&
operation
manual
|
ocle
/
ocla
heating
system
2.6.2 CUSTOMER INTERFACE
CONNECTIONS
The following customer interface connections are
available for remote control and monitoring:
•
Remote On/Off 24 V DC shutdown (G)
OB2:9/OB2:10
When activated, the remote on/off
connection shuts down the heating system.
When deactivated, normal heating will
resume. Use this connection for remote
operation of the heater when the
local
/
off
/
remote
switch is turned to
remote
.
OOE:
The
24 V DC shutdown
connection is
wired
C (normally closed)
from the
factory; see system wiring schematic for
directions to switch to NO (normally open)
operation.
•
Fault Signal
OB2:1/OB2:2 coolant (C)
OB2:5/OB2:6 oil (E)
The fault signal will indicate a heating system
shutdown, triggered by either the high-
limit temperature control relay or the motor
protection switch (see
SECOIO 4.1
).
•
Motor Run Signal
OB2:3/OB2:4 coolant (D)
OB2:7/OB2:8 oil (F)
A motor run signal indicates the pump motor
is running. If no signal is present, the pump
motor is not running.
•
Switch Location Signal
X1:7/X1:8/X1:9 coolant (H)
X2:7/X2:8/X2:9 oil (I)
The switch location signal indicates the
local
/
off
/
remote
switch position:
off
:
7
,
local
:
8
,
remote
:
9
.
L1
L2
TB1
L3
A
B
Figure 5. Main power supply and customer interface connections
as shown in the OCLE/OCLA control box. Reference electrical
schematic drawing for proper wiring locations; the following
illustrations are typical customer interface locations.
A.
Main power
terminal block
B.
Main power
ground block
C.
Coolant fault
signal
D.
Coolant motor run
signal
E.
Oil fault signal
F.
Oil motor run
signal
G.
Remote On/Off
24 V DC shutdown
H.
Coolant switch
location signal
I.
Oil switch
location signal
L1
L2
TB1
TB2
L3
1
2
4
6
8
10
3
5
7
9
X2 X1
C
D
E
F
G
H
I
TB2:10
TB2:9
K1
A1
A2
1
2
3
4
SW1-B
X1:8
P1:8
X1:9
P1:9
P1:7
X1:7
X1:7
X1:8
X1:9
TB2:1
TB2:2
TB2:3
TB2:4
14
13
K2
K4
11
12
1
2
3
4
SW3-B
X2:8
P2:8
X2:9
P2:9
P2:7
X2:7
X2:7
X2:8
X2:9
TB2:5
TB2:6
TB2:7
TB2:8
14
13
K6
K8
11
12
REMOTE ON/OFF
24 V DC
LOCAL SIGNAL
– COOLANT
REMOTE SIGNAL
– COOLANT
LOCAL SIGNAL
– OIL
REMOTE SIGNAL
– OIL
FAULT WHEN
CLOSED – COOLANT
MOTOR ON WHEN
CLOSED – COOLANT
FAULT WHEN
CLOSED – OIL
MOTOR ON WHEN
CLOSED – OIL
