Schweitzer Engineering Laboratories SEL-787 - I;O Configuration; Figure 2.1 Relay Panel-Mount Dimensions

2.2
SEL-787 Relay Instruction Manual Date Code 20081022
Installation
I/O Configuration
Figure 2.1 Relay Panel-Mount Dimensions
Refer to Section 1: Introduction and Specifications, Models, Options, and
Accessories for information on mounting accessories.
I/O Configuration
Your SEL-787 offers flexibility in tailoring I/O to your specific application. In
total, the SEL-787 has six rear-panel slots, labeled as Slots A, B, C, D, E, and Z.
Slots A, B, and Z are base unit slots, each associated with a specific function.
Optional digital and analog I/O, communications, RTD, and voltage cards are
available for the SEL-787. Figure 2.2 shows the slot allocations for the cards.
Because installations differ substantially, the SEL-787 offers a variety of card
configurations to provide options for the many diverse applications. Choose
the combination of option cards most suited for your application from the
following selection.
NOTE: When a voltage signal is
available, the SEL-787 tracks the
frequency (maximum slew rate of 9
Hz), and samples 16 times a cycle at
the measured frequency. If a voltage
signal is unavailable, the relay
samples at a fixed rate of 16 times
nominal frequency.