Johnson Controls VSD Series User Manual

VSD Series Drives User Manual Powered by Eaton Technology
4-2 For more information visit: www.johnsoncontrols.com LIT-1201828
November 2009
Table 4-1: Option Board A2 Terminal Descriptions
Figure 4-2: Option Board A2 Terminal Locations
Inverting the Digital Input Signal
The active signal level depends on which potential the common inputs CMA and CMB
(terminals 11 and 17) are connected to. The alternatives are either 24V DC or ground (0V). See
Figure 4-3.
The 24V DC control voltage and the ground for the digital inputs and the common inputs
(CMA, CMB) can be either the internal 24V DC supply or an external supply.
Figure 4-3: Positive/Negative Logic

Positive logic (24V DC is the active signal) = the input is active when the switch is closed.

Negative logic (0V is the active signal) = the input is active when the switch is closed.
Terminal Signal Description and Parameter Reference
21 RO-1/1 Normally Closed (NC) Run Switching Capacity:
24V DC / 8A
250V AC / 8A
125V DC / 0.4Az
Min switching load: 5V/10 mA
Continuous Capacity: <2 Arms
22 RO-1/2 Common
23 RO-1/3 Normally Open (NO)
24 RO-2/1 Normally Closed (NC) Fault Switching Capacity:
24V DC / 8A
250V AC / 8A
125V DC / 0.4A
Min switching load: 5V/10 mA
Continuous Capacity: <2 Arms
25 RO-2/2 Common
26 RO-2/3 Normally Open (NO)
21 22 23 24 25 26
DI-1
24V DC
DI-2
DI-3
CMA
Ground
DI-1
Ground
DI-2
DI-3
CMA
+
24V
1 2

Johnson Controls VSD Series Specifications

General

Brand	Johnson Controls
Model	VSD Series
Category	DC Drives
Language	English