Miller Electric 230Volt Owner's Manual download pdf (Page 36)

OM-263 001 Page 32

6-9. Changing Optional Settings

! Disconnect and lockout/tagout in-

put power. Follow established pro-

cedures regarding the installation

and removal of lockout/tagout

devices.

1 Controller Circuit Board

Open control panel access door and intern-

al electrical panel to access circuit board.

2 Terminal Block TB2

3 Disable Setpoints Adjustment

4 External Alarm Reset

5 Mode Jumper Block J5

6 Internal Alarm Disable

7 Terminal Block TB4

8 Analog Sensor Out Terminals 13 And

14

To Disable Setpoint Adjustment (TB2)

To restrict setpoint changes, install a jump-

er wire across the Prog. Disable terminals

(3 and 4) on terminal block TB2. The cur-

rent settings will still be displayed, but no

changes can be made until the jumper is re-

moved. Interrupting the jumper with a

key-operated, normally-closed switch in-

stalled in the enclosure door provides tem-

porary access to the setting functions

without opening the door.

To Reset/Disable External Alarm (TB2,

Terminals 5 And 6)

If desired, wire the Arm Reset terminals (5

and 6) on terminal block TB2 to a key−oper-

ated, normally−open switch. Closing the

switch turns the alarm off.

To Disable Internal Alarm (J5)

To disable the alarm internally, remove the

jumper on Mode jumper block J5. Disabling

the alarm relay reduces the alarm function

to the Alarm LED visual display only.

Auxiliary Relay Output (J5, Terminals

10, 11, 12)

If the jumper on Mode jumper block J5 is not

installed, the auxiliary relay output will not

function.

If the jumper is installed in the Alarm mode

position, the auxiliary relay output activates

based on the setting of the Alarm setpoint.

If the jumper is installed in the Slave mode

position, the auxiliary relay output activates

in parallel with the Hi/Lo control relay.

Analog Output (TB4, Terminals 13 And

14)

Terminal block TB4 terminals 13 and 14

provide a 4 to 20 mA output proportional to

the 0−to−maximum span of the pressure

sensor. This circuit requires a 10k ohm min-

imum load.

1

3

7

42

5

6

8

 Board is located inside electrical panel.

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