The IPMON01 Power Monitor Module has three red/green status LEDs and eight red alarm LEDs on the module faceplate.
Table 4-1 lists power monitor module LED states. Figure 4-1 shows the IPMON01 module faceplate LEDs.
NOTE: LED operation is configured at the time of installation via dipswitch and jumper settings. Each LED can be configured for monitoring multiple lines, buses and signals. Because of the numerous options available, it is a good practice to keep a copy of the dipswitch and jumper configuration inside or near the cabinet as a reference guide to identify the sources of an alarm signal or status LED signals.
The self-check LED and line one LED are red/green status LEDs that are green during normal operation. The self-check LED turns red if the power monitor module detects an on-board hardware failure. The line one LED indicates the status of input power on N, N+1 or N+x redundant systems and turns red if the input power drops below the specified range. These LEDs are always enabled. The line two LED needs to be enabled to indicate the status of a second input power line on 2N systems.
The other eight alarm LEDs indicate the status of selected monitoring signals according to the module dipswitch and jumper configuration. Four LEDs (PFI, system power, I/O power and external) can be set up for monitoring numerous lines and signals. The PFI LED can be enabled to indicate any one or more of the system and I/O bus voltages, status input line one, or any combination of lines and buses. The I/O power LED can be set up to reflect the condition of status input lines one and two (contact inputs), and auxiliary input lines one and two (for monitoring 24, 48 and 125 VDC external power sources). The external LED can be enabled to indicate the status of line two input power and 5, 15 and -15 VDC bus voltages. If any one or more of the signals or lines associated with a LED goes bad, the LED turns red. These LEDs are off under normal operation, or disabled.
Jumpers set up the operation of the remaining five LEDs. These jumpers select the input power line sensing and operating voltage, high and low trip points for auxiliary 24, 48 or 125 VDC I/O monitoring, temperature sensor trip points, and 25.5 VDC I/O bus voltage. These LEDs operate like the other red LEDs: off for normal operation or disabled, red for a failure.
