Ib2 (Controller Interface Board) Connections (If Required); Only) - Vertiv NetSure 7100 Series Installation Manual

IB2 (Controller Interface Board) Connections (if required) (Main Bay Only)
NOTE!
The system may have one (1) or two (2) IB2 boards installed. The first IB2 is standard while the
second IB2 is optional.
Each IB2 (Controller Interface Board) provides connection points for digital inputs, programmable relay outputs,
and temperature probes. The IB2 interface boards are mounted inside the distribution cabinet. Refer to Figure
59.
Digital Inputs and Programmable Relay Outputs
Digital input and relay output leads are connected to screw-type terminal blocks located on each IB2.
Recommended torque for these connections is 2.2 in-lbs. Refer to Figure 61 for terminal locations. Refer to
Table 7and Table 8 for pin-out information.
Digital Inputs
Connect up to eight (8) digital inputs to each IB2. Note that you must supply both paths for the digital input
(either a positive or negative signal and the opposite polarity return path). Observe proper polarity. Refer to
Figure 61 for terminal locations and Table 7 for pin-out information.
NOTE!
First IB2 Board only: -48V is factory wired to the Digital Input #8 (-) terminal for your
convenience and function predefined for ESTOP. Customer-furnished system ground applied to
terminal Digital Input #8 (+) activates the ESTOP function. The ESTOP function shuts down and locks
out the rectifiers or 400V DC input converters, opens the LVD's, and shuts down the optional -48V to
+24V DC converters. When the ESTOP signal is removed, LVD's close (if battery present) and -48V to
+24V DC converters restart. To restart the rectifiers or 400V DC input converters; turn input power to
the rectifiers/converters OFF, wait 30 seconds or more (until the LEDs on the module extinguish), then
turn input power to the rectifiers/converters ON.
The digital inputs can be programmed to provide an alarm when the signal is applied (HIGH) or removed
(LOW). Refer to the ACU+ Instructions (UM1M820BNA or UM1M820DNA400) or NCU Instructions
(UM1M830BNA) for programming information.
Digital Input Ratings: Refer to the following.
a) Maximum Voltage Rating: 60V DC.
b) Active High: > 19V DC.
c) Active Low: < 1V DC.
The digital inputs may be preprogrammed for specific functions. Refer to the configuration drawing (C-
drawing) supplied with your system for your system's specific configuration.
Programmable Relay Outputs
Each IB2 provides eight (8) programmable alarm relays with dry Form-C contacts. Connect up to eight (8) relay
outputs to each IB2. Refer to Figure 61 for terminal locations and Table 8 for pin-out information.
NOTE!
The relay assigned to "Critical Summary" alarm (Relay 1 on first IB2 by default) will operate in the
"Fail Safe Mode". "Fail Safe Mode" means Relay 1 is de-energized during an alarm condition, opening the
contacts between the C and NO terminals, and closing the contacts between the C and NC terminals.
The remaining 7 relays energize during an alarm condition, closing the contacts between the C and NO
terminals, and opening the contacts between the C and NC terminals.
Vertiv | NetSure 7100 Series -48V DC Power System Installation Manual (IM582127000) | Rev. BB 127