Print Date 12/05/15 Page 15 of 32 S7600-00MA-08
Each lead terminates in a separate 9 Way free D plug at the E2023 end which is wired as follows :-
Pin 1
RS232 Data from Drive (not enabled)
Pin 2
Ground
Pin 3
Prefer Drive from Rem. Control
Momentary low > approx. 1sec
Pin 4
Slow Status Monitor from Drive
Continuous low >2secs registers ‘good’
Continuous high >10secs registers ‘fail’
Pin 5
Fast Status Monitor from Drive
Continuous low >2secs registers ‘good’
Continuous high >2secs registers ‘fail’
Pin 6
RS232 Data to Drive (not enabled)
Pin 7
Ground
Pin 8
Ground
Pin 9
Mute/demute to Drive
Continuous low to mute
Each input (pins 3, 4, 5) is internally ‘pulled up’ to +5V through 12k
Ω
and must be fed from a voltage
free source of less than 1k
Ω
to ground for a low state (open-circuit for a high state). These inputs are
protected against constant application of up to
±
12V dc directly applied.
The mute/demute output (pin 9) is an ‘open collector’ NPN, silicon low saturation switching transistor
suitable for driving loads from +5V to +24V dc with maximum currents of 10mA. The low state output
impedance is approximately 10
Ω
.
These connections are wired in accordance with the monitor and control requirements of the type of
Exciter/Drive(s) supplied and normally, not all the pins will need to be connected. Pin 3, if used, is for
connection to a remote control and monitoring system. This enables selection of a particular drive to
be preferred (forced) remotely by momentarily pulling this line to ground.
If automatic dual Exciter/Drive changeover only requires one of the two status monitor inputs for
operation, the other must be connected to ground.
2.2.7 Parallel (standard) or RS232 Serial Remote Control DTE Connector
This is a 9 Way D plug PL04 at the rear of the E2023 Controller unit. It is used to enable various forms
of remote control and monitoring, possibly requiring additional external units. Multi-core screened
cable, not exceeding 3 metres in length, should be used for the interconnecting lead.
The lead terminates in a 9 Way free D socket at the E2023 end which is wired as follows :-
Parallel (standard)
Serial RS232
Pin 1
Power Output Low (app.–2dB rel. set output)
Not connected
Pin 2
Power Output Fail (app. –12dB rel. max o/p)
Received Data (to E2023)
Pin 3
Reverse Power High (app. 13, 25 or 50W)
Transmit Data (from E2023)
Pin 4
Combiner Temp. High (app. +100deg.C)
Not Connected
Pin 5
Ground
Ground
Pin 6
Fan/Cooling System Fail
Not Connected
Pin 7
System Normal
Not Connected
Pin 8
Drive A/B Selected
Not Connected
Pin 9
Drive Changeover on Auto
Not Connected
The parallel outputs are ‘open collector’ NPN, silicon low saturation switching transistors suitable for
driving loads from +5V to +24V dc with maximum currents of 10mA. The low state output impedance
is approximately 100
Ω
. Each output is protected against constant application of up to
±
5V dc directly
applied. A normal (non-faulty) condition is indicated by the output pin being pulled to ground (i.e. low
state) by the switching transistor. Drive A selected and Drive C/O on Auto are similarly indicated. Note
that the serial option requires an additional internal link lead, which re-directs the serial remote control
from the front panel COM port to the rear panel DTE connector (pins 2, 3, 5 only).
