EMIT
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 664-9980 • Website:
TB-6557
Page 3 of 4
© 2011 DESCO INDUSTRIES, INC.
Employee Owned
Light Fixture
*Optional
*Optional
Programable
Logic
Controller
Power Supply
Multi-Ground Hub
Worksurface,
Tool, Cart,
Accessory
Figure 6. Installing the Multi-Ground Continuous Monitor.
TURNING OFF THE AUDIBLE ALARM
If one of the monitored ground channels exceeds its
resistance limit, the monitor’s audible alarm can be
momentarily turned off. This allows you to troubleshoot
theproblem without the annoyance of the audible alarm.
Toturn the audible alarm off, press and hold the SET 1
buttonfor approximately 3 seconds during normal
operation. Tore-activate the audible alarm, press and
hold the SET 1 button for approximately 3 seconds. The
audible alarm will also re-activate itself once the failed
ground channel reenters the resistance limit.
Calibration
CALIBRATION MODE
I. Disconnect the power adapter from the monitor.
II. Disconnect all connections from ground terminals
1-8 and relays 1 and 2. Do not disconnect the
ground reference from the monitor.
III. Hold down the SET 1 button and simutaneously
power the monitor back up. Within approximately
2 seconds, the PRG LED will illuminate and the
monitor will enter Calibration Mode.
IV. The monitor will then calibrate itself to 1 ohm,
1 megohm, 10 megohms, and 35 megohms for
each ground channel.
V. If the monitor passes calibration, the POWER LED
will illuminate blue.
VI. If the monitor fails calibration, the POWER LED
will not illuminate. In this case, follow the steps
listed under SELF DIAGNOSTIC MODE.
SELF DIAGNOSTIC MODE
The following steps will help you determine which ground
channel is out of calibration.
I. Disconnect the power adapter from the monitor.
II. Disconnect all connections from ground terminals
1-8 and relays 1 and 2. Do not disconnect the
ground reference from the monitor.
III. Hold down the SET 2 button and simutaneously
power the monitor back up. Within approximately
2 seconds, the PRG LED will illuminate and the
monitor will enter Failure Indication Mode.
IV. The monitor will cycle through each resistance
limit.
V. The ground channel LEDs will then illuminate red
or green. Green indicates that the limit is within
calibration. Red indicates that the limit is out of
calibration.
VI. Disconnect then reconnect the power to the
monitor to return to normal operation.
