6-8
Interfaces
Digital Outputs
Two types of discrete output circuits are available on the J1 connector:
•
Dedicated relay outputs
•
Selectable transistor based outputs
Both types support 12-24 VDC logic interfaces:
Dedicated Relay Outputs
BRAKE and DRIVE READY. Each output is a normally open relay. The brake contacts are rated for
1 Amp at 50 Volts. The Drive Ready contacts are rated for 1Amp at 30 VDC.
Selectable Transistor Outputs
OUTPUT 1 and OUTPUT 2 are optically isolated, active high, current sourcing, single ended transistor
output channels. Each channel sources a maximum of 50 mA.
READY and BRAKE/DRIVE ENABLED Circuits
The specifications for these outputs are as follows:
NOTE: The Brake contacts may be used to control 24VDC brakes on
Thomson motors with a 4” frame or smaller. A user provided relay may
be driven by these outputs if higher power levels are required. Refer to
“BRAKE/DRIVE ENABLE Application Examples” on page 6-9 for
examples .
Intro
F
IGURE
6.8
READY and BRAKE/DRIVE ENABLED Circuits
T
ABLE
6.6
READY and BRAKE/DRIVE ENABLED Output Specifications
Parameter
Description
Maximum
ON state resistance
Internal resistance between J1-24 (+) and J1-25 (-) or J1-49(+)
and J1-50(-) when the contacts are closed.
1 Ohm
ON state current
Current flow through the relay when contacts are closed.
1 Amp
OFF state current
Leakage current from either output when the relay contacts are
open.
0.01 mA
OFF state Voltage
Voltage difference between the outputs with open relay contacts.
30 Volts
J1
Drive
+
-
Normally
Open
Relay
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