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Entek IRD 6652 DSP Protection Monitor
Testing Calibration and Relays
1.
Connect a signal generator or other known signal source to the channel 1 input
terminals (1 and 2). Refer to “Signal Inputs for Testing” on page 40 for details. When
testing configurations for accelerometer input with gap voltage, set the input signal DC
gap voltage to halfway between the TX LO and TX HI settings.
2.
Connect a multimeter to the channel 1 Alert relay terminals to test for continuity (28
and 29). You could also connect to the channel 1 relay N/O instead of the N/C terminal
(29 and 30).
3.
Using 100 Hz as the input frequency, set the input signal amplitude so it is less than the
Alert setting for channel 1 of the monitor. This is the ALERT 1 option on the User
menu (page 16). Use the transducer sensitivity from the table on page 40.
4.
If the LATCHED option is set to YES, you may have to manually reset the relays by
pressing the
RES
button on the front panel of the monitor.
5.
Test the state of the channel 1 Alert relay terminals (open or closed).
6.
Increase the input signal to exceed the channel 1 Alert setpoint so that
Again, use the transducer sensitivity from the table on page 40 and an input frequency
of 100 Hz.
7.
Test the state of the channel 1 Alert relay terminals. The state should change when the
input signal exceeds the Alert setpoint. Depending on the GLOBAL option setting in
the DELAYS submenu (page 32), it may take up to 30 seconds before the relay changes
state.
8.
Test the state of the channel 1 Danger relay terminals (open or closed).
9.
Increase the input signal to exceed the channel 1 Danger setpoint so that it is above the
Danger alarm setpoint. This is the DANGER 1 option on the User menu (page 16).
10. Test the state of the channel 1 Danger relay terminals. The state should change when
the input signal exceeds the Danger setpoint. Depending on the GLOBAL option
setting in the DELAYS submenu (page 32), it may take up to 30 seconds before the
relay changes state.
Note:
There are two Danger relays for each channel; remember to test them both.
Repeat this process to test the channel 2 alarm relays.
Alert alarm setpoint
transducer sensitivity
×
input signal amplitude
>
Alert alarm setpoint
transducer sensitivity
×
input signal amplitude
<
Danger alarm setpoint
transducer sensitivity
×
input signal amplitude
<
