ETS-Lindgren 8100-040, User Manual, Page: 37 / 44

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37
Remote Control and Interlock Interface
Pin Signal Function
1 MAINS ON (100 mA) Status (CMOS, 12 V = Mains on)
2 OPERATE Status (CMOS, 12 V = OPERATE)
3 n.u. Status
4 n.u. Status
5 TTL REMOTE Status (CMOS, 12 V = Remote)
6 SUMMARY ALARM Status (CMOS, 12 V = Fault)
7 GND
8 EXTERNAL INTERLOCK
9 OPERATE Command (negative slope triggered)
10 n.u. Command (negative slope triggered)
11 TTL REMOTE Command (negative slope triggered)
12 n.u. Command (negative slope triggered)
13 n.u.
14 GND
15 EXTERNAL INTERLOCK RETURN
Figure 16: Signals at the remote control and interlock connector
All commands and messages, which are available on the front panel, can also be
found on the remote control interface. The status messages for all faults are
combined to a summary alarm on the interface.
The remote control interface commands are activated by negative slope triggering.
(The pulse width should be 10 to 50 ms.) This is done in order not to activate the
amplifier immediately on power-on by static remote control interface commands (TTL
REMOTE and OPERATE). Triggering on the negative slope permits to control the
interface by 12 V CMOS logic or 5 V open-collector TTL logic.
The status output MAINS ON supplies a maximum current of 100 mA at 12 V in order
to be able to activate and feed other equipment, or, for example, an external interface
and similar devices together with the amplifier.
The amplifier can be set to remote control mode and back to local control mode by
using the command TTL REMOTE. At the status display the text will change from
LOCAL to TTL. Now the amplifier can be activated using the command OPERATE.
The indicated message must then change accordingly from STANDBY to OPERATE.