A540-55-880 Issue D
Page 12 © Edwards Limited 2015. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Technical data
2.6 Cooling water data
Accessory interface 15-way D socket
Analogue measurement for water
flow meter
Pin 1 - input, Pin 5 common
Active accessory module
Pin 3 - RS485 +, Pin 10 - RS485 –
Pump running status contacts
Pin 6 - Dry pump (normally open)
Pin 14 - Mechanical booster
(normally open)
Pin 15 – common
30 V a.c. 1 A, 60 V d.c. 0.5 A
Gate valve
Pin 4 - Gate valve drive transistor
(open collector)
Gate valve position sense
Pin 7 - ‘Closed’, Pin 8 - ‘Open’
Power Supplies
Pin 12 - Accessory 24 V supply
Pin 13 - Accessory 24 V supply
†
Pin 5 - 0 V supply common
24 V d.c. 0.75 A
*
24 V d.c. 0.2 A
*
The System interface, the EMS interface and the Accessory interface have a combined current rating
of 0.75 A.
†
This supply will be disconnected in the event of an emergency stop.
Table 9 - Water cooling system data
Description Rating Units
Typical heat load at ultimate 1100 W
88 %
Maximum supply pressure 6.9 barg
100 psig
Maximum allowable system
differential pressure
5.5 bar
Minimum required pressure
differential across supply and return
0.5 bar
Supply temperature range 10-30 °C
Minimum flow rate required 1.6 (20 °C water & 20 °C ambient)
2.0 (30 °C water & 40 °C ambient)
l/min
Rated minimum pressure
differential
*
1bar
Water type Treated or non-corrosive industrial
Maximum particle size 0.03 mm
2
Acidity 6.5 to 8.0 pH
Tab l e 8 - El ect ri cal connections (continued)
Description
Mating Connector description /
external supply rating
Internal supply rating
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