A540-55-880 Issue D
Page 12
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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
*
1
bar
Water type
Treated or non-corrosive industrial
Maximum particle size
0.03
mm
2
Acidity
6.5 to 8.0
pH
Table 8 - Electrical connections (continued)
Description
Mating Connector description /
external supply rating
Internal supply rating
