Getting Started 13
Chapter 1
Typical
Configurations
The Form C switch accepts user inputs up to 125 Vdc or 250 Vrms.
Maximum rated power capacity (external load) is 150 Wdc or 1250 VA per
channel. Per module, you can switch 1500 Wdc or 12500 VA.
As noted, the switch may be configured for general purpose
switching/scanning or digital output applications. For general purpose
switching or scanning, no additional configuration is required. To configure
the switch for digital output applications, install external pull-up resistors as
required.
Multiple Form C switch modules can be configured as a switchbox
instrument. When using a switchbox instrument, multiple Form C switch
modules within the switchbox instrument can be addressed using a single
interface address. This configuration, however, requires the use of
Standard Commands for Programmable Instruments (SCPI).
General Purpose Relay
Configuration
As factory-configured, the Form C switch module is set for general purpose
relay configuration. For this configuration, you can switch channels by
opening or closing channel relays or you can scan a set of channels.
Figure 1-2 shows a typical general purpose relay configuration for channel
00. When the relay is open (NC terminal is connected to the C terminal), load
1 is connected. When the relay is closed (NO terminal is connected to the C
terminal), load 2 is connected.
Digital Output
Configuration
By installing external pull-up resistors, the Form C switch can be configured
as a digital output device. Figure 1-3 shows channel 00 configured for digital
output operation. When the channel 00 relay is open (NC connected to C),
point 1 is at +V. When the channel 00 relay is closed (NO connected to C),
point 1 is at 0V.
Figure 1-2. General Purpose Relay Configuration
C
NO
NC
Channel
00
C0NO
C0NC
C0C
TERMINAL
MODULE
2
1
+V
Relay
Load
Open
1
Closed
2
Содержание E1463A
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