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Technical data
B722-40-880 Issue H
2.7
Electrical data
DX pumps can be driven either by the customer system or by the Edwards TIC Turbo Instrument Controller or TIC
Turbo Controller.
If using the customer system, the size of the power supply required depends on the application. The power limit
setting determines how quickly the pump ramps up and dictates the size of power supply required. If serial
communications or access to an Edwards TIC is available, power limit setting of the DX pump can be selected. Refer
to
for the maximum and minimum power limit settings for DX pumps and for the associated maximum input
current requirements. If the application requires rapid cycling of the pump, faster ramp times can be achieved if the
power supply delivers higher current, up to a maximum in accordance with
If the facility to adjust the power limit setting is not available, use a power supply capable of delivering enough
current to meet the Edwards factory default power limit setting, shown in
. For the EXT75DX this would be
around 4 amps.
If the DX pump is driven using an Edwards TIC, be aware that there are several variants. Contact Edwards to
determine which is most suitable for the application.
2.8
Logic interface connector
DX pumps have a 15-way logic interface connector on the end of the logic interface cable (see
). The logic
interface connector can be plugged directly into the Edwards TIC Turbo Instrument Controller or TIC Turbo
Controller. Use a suitable connector mating half (not supplied) to connect the DX pump to the customer equipment.
Refer to
for the connector mating half type and to
for Logic Interface connector pins for the electrical
connections.
Table 8 - Logic interface technical data
Logic interface item
EXT75DX
Connector
*
15-way D-type male
DX pumps electrical supply:
Allowable voltage range
(including any ripple)
24 V d.c. +5%, -10%
(21.6 to 25.2 V d.c.)
Maximum voltage ripple
0.5 V r.m.s.
Maximum input current with maximum power limit
setting
<6 A at 24 V during ramp
Maximum input current with minimum power limit
setting
<3 A at 24 V
Fuse (or equivalent current limiting device) rating 6 A type 'T' IEC approved or
6 A time delay fuse UL/CSA approved
Factory default setting
80 W
Maximum power limit
120 W
Minimum power limit
50 W
Hardware control input signal:
Enabled control voltage: low (close)
0 to 0.8 V d.c. (I
out
= 0.55 mA nominal)
Disabled control voltage: high (open)
4 to 26.4 V d.c. (Internal pull up to 6.35 V nominal)
