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5.6.3 IB2 (Controller Interface Board) Connections (if required)
The IB2 (Controller Interface Board) provides connection points for digital inputs, programmable relay outputs, and temperature
probes. The IB2 interface board is mounted inside the distribution cabinet. Refer to Figure 7 or Figure 8.
Digital Inputs and Programmable Relay Outputs
Digital input and relay output leads are connected to screw-type terminal blocks located on the IB2. Recommended torque for these
connections is 2.2 in-lbs. Refer to Figure 10 for terminal locations. Refer to Table 1 and Table 2 for pin-out information.
Digital Inputs
Connect up to eight (8) digital inputs to the 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 10 for terminal locations and Table 1
for pin-out information.
The digital inputs can be programmed to provide an alarm when the signal is applied (HIGH) or removed (LOW). Refer to the
Controller Instructions (UM1M820BNA or UM1M830BNA) for programming information.
Digital Input Ratings: Refer to the following.
a)
Maximum Voltage Rating: 60 VDC.
b)
Active High: > 19 VDC.
c)
Active Low: < 1 VDC.
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.
ESTOP Function
If an ESTOP switch is wired to the IB2-1 Controller Interface Board, customer-furnished system ground applied to terminal DI8+
activates the ESTOP function. The ESTOP function shuts down and locks out the rectifiers, shuts down and locks out the optional -
48 VDC to +24 VDC converters, and opens the optional low voltage disconnect (LVD) contactors (battery and load type). If the
system has battery connected and does not contain a battery LVD or the controller power option is set to Battery Pwr (jumper J4 on
the system interface board is set to Battery Pwr), the controller will remain operational. If the system does not contain battery or load
LVD(s) and has battery connected, the loads will be sustained by the battery voltage.
For Systems NOT Containing a Battery LVD: When the ESTOP signal is removed, LVD contactors (battery and load type) will close
after the "LVD Reconnect Delay" has elapse (customer configurable via the controller) if battery voltage is present on the bus.
Rectifiers and -48 VDC to +24 VDC converters will remain off. The rectifiers will restart when the input power is removed and
restored after 30 seconds or more (until the LEDs on the modules extinguish). To restart the -48 VDC to +24 VDC converters:
remove the converter, wait 30 seconds or more (until the LEDs on the converter extinguish), then re-insert the converter.
For Systems Containing a Battery LVD: When the ESTOP signal is removed, LVD contactors (battery and load type) will remain open.
Rectifiers and -48 VDC to +24 VDC converters will remain off. The rectifiers will restart when the input power is removed and
restored after 30 seconds or more (until the LEDs on the modules extinguish). When the rectifiers restart, LVD contactors (battery
and load type) will close after the "LVD Reconnect Delay" has elapse (customer configurable via the controller) and the -48 VDC to
+24 VDC converters will restart.
NOTE! If a customer-furnished method to disconnect the input power to the system is not provided, the rectifiers will stay
locked OFF until the input power is recycled. If the ESTOP signal is removed without recycling the input power, the rectifiers
will remain off and have a local alarm visible on the module. The ESTOP alarm from the controller will extinguish. The
controller will not issue an alarm for this condition.
Proprietary and Confidential © 2023 Vertiv Group Corp.
Vertiv™ NetSure™ -48 VDC Power System Quick Start Guide
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