Baldor MN1903 installation manual Relay and can power, Relay connections

4.5.4 Relay and CAN power - X8

10

1

Location	Breakout module, connector X8
Pin	Name	Description
1	CAN1 V+	Power input for CAN1 (CANopen)
		network (12-24V)
2	CAN1 GND	Ground for CAN1 (CANopen) network
3	CAN2 V+	Power input for CAN2 (Baldor CAN)
		network (12-24V)
4	CAN2 GND	Ground for CAN2 (Baldor CAN) network
5	Relay NC	Normally closed relay connection
6	Relay NO	Normally open relay connection
7	Relay COM	Common relay connection
8	USR V+	Customer power supply
9	CGND	Customer power supply ground
10	Shield	Shield connection

Description

Connection point for CAN power supply and relay contacts.

The CANopen (CAN1) channel is isolated and requires a 12-24V, 60mA supply (pins 1 and 2). These pins are connected internally to pins 9 and 3 of connector X17 (see section 4.6.1).

The Baldor CAN channel (CAN2) is normally non-isolated and therefore does not need a power supply. However, it may be necessary for some Baldor CAN nodes to derive a 12-24V supply from the CAN cable. For this reason, X8 provides a convenient connection point for the supply (pins 3 and 4). These pins are connected internally to pins 5 and 4 of connector X18 (see section 4.6.2).

The relay pins are isolated from any internal circuits on the NextMove PCI. The relay is controlled by a latch, which is cleared when the NextMove PCI resets. Reset can occur due to power-down, a watchdog error or when deliberately caused by the host PC. In normal operation the Relay NC contact is connected to Relay COM. The relay is energized in normal use and is the factory preset global error output channel. In the event of an error or power loss to the card, the relay is de-energized and the Relay NO contact is connected to Relay common.

NextMove PCI

MintMT

	Breakout	X8
Relay	module
		5
	100-pin
	cable	6
		7

Relay NC

Relay NO

Relay COM

Figure 8 - Relay connections

4-18 Input / Output MN1903