ControlMaster CM30, CM50 and CMF310
Universal process controllers,
1
/
4
,
1
/
2
DIN and fieldmount
4 Installation
IM/CM/ED–EN Rev. X
13
4.4 Jumper Links for Relay Outputs –
CM30 and CM50 Controllers
The factory-set default for relay action is N/O.
4.4.1 Removing the Controller
from its Case
– CM30 and CM50
The ControlMaster inner assembly must be
removed from its case to access the relay contact
jumper links.
1.
Insert the bezel release tool
A
(supplied)
into the front panel slot
B
below the
function keys.
2.
Press the bezel release tool
A
fully in and
then down
C
until the shoulder on the tool
engages with the notch behind the
controller front plate.
3.
Pull the bezel release tool
A
to withdraw
the inner assembly from the case
D
.
4.4.2 Resetting Jumper Links –
CM30 and CM50
1.
The links associated with the relay outputs
are shown in Fig. 4.12.
2.
If necessary, move the link to select the relay
action required (N/O or N/C).
Note.
If the bezel release tool is mislaid, 2 small
flat-headed screwdrivers (4 mm [0.15 in.]) can
be used as alternative tools, one inserted into
the front panel slot and the second for leverage
in the notch on the underside of the controller
front plate. The notch is the only area that can
be used as a leverage point – do not attempt to
lever the front panel from any other area.
Fig. 4.11 Removing the Controller from its Case
C
B
D
Note.
The factory-set default for all jumper links
is N/O.
Fig. 4.12 Jumper Links for Relay Outputs
N/C
N/O
N/C
N/O
N/C
N/O
LK1
LK2
LK3
N/O
N/O
N/C
N/C
LK1
LK2
N/O
N/O
N/C
N/C
LK2
LK1
CM30 Option Board 1 / 1a
CM50
Option
Board 1
CM50
Standard
Board 1
LK1 = Relay O/P 3
LK2 = Relay O/P 4
LK1 = Relay O/P 1
LK2 = Relay O/P 2
LK1 = Relay O/P 2
LK2 = Relay O/P 3
LK3 = Relay O/P 4