Relay Outputs; Usb Port - Baldor VS1GV21-1B Installation & Operating Manual

5.7 Relay Outputs

Relay Outputs 1 and 2 provide N.O. and N.C. voltage-free contacts. The internal relay function is shown in Figure 5-22.
Control Board
Relay Out 1 N.C.
Relay Out 1 COM
Relay Out 1 N.O.
Relay Out 2 N.C.
Relay Out 2 COM
Relay Out 2 N.O.
Note: Relay Outputs are rated to 10-30VDC or 240VAC @ 5A resistive (non-inductive).

5.8 USB Port

The USB port shown in Figure 5-23 is a full 12Mbps USB 2.0 compliant port for serial communications. The connections are
described in Figure 5-23 and Table 5-14.
5-24 Control Wiring
Figure 5-22 Relay Contacts
J3 If the load is a DC relay
coil, install a flyback
25
Load
diode across the coil to
26
reduce noise
27 Load
transmission.
28
Load
29
Load
30
See recommended tightening torques in Table A-2.
Figure 5-23 USB Receptacle Pin Identification
Host End (USB-A)
Peripheral End (USB-B)
Table 5-14 USB Port Connections
Pin Signal Name
1 Vbus USBus power from the host for monitoring
2 D- Data Return
3 D+ Data In
4 GND Power Supply Return
If the load is an AC
relay coil, install an RC
+
Snubber across the coil
to reduce noise
transmission.
RE
-
1
4
1
2
3 4
Description
RC Snubber
0.47 f
RE
33
MN765