4664-558-01
INSTALLATION INSTRUCTIONS
COOLING MODULE
HPC CM
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Important information!
24 VAC 2 may only be used as voltage feed for external
equipment requiring a 0-10V control signal, or as voltage
feed for additional modules.
24 VAC 1 must not be connected to 24 VAC 2, 24 VDC, or
other equipment that use a 0-10V control signal or to signal
ground GND.
The two separate 24 VAC circuits must never be connected
with each other or with protective earth.
The total power load of 24 VAC 1 and 24 VAC 2, respectively,
must not exceed 50VA.
Table of contents
Cooling module, HPC CM .........................4
Installation .......................................4
System image ....................................5
Connecting ......................................6
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Cooling module, HPC CM
The operational description for the cooling module is available in the controller manual.
Installation
Application
The cooling module controls the temperature of a cooling using a pilot valve. The cold is collected from a cooling
tank, which is cooled with active or passive cold.
Passive cold means that cooling agent fluid is circulated through the drill hole and the cooling tank, without acti-
vation of any heating pump. Only circulation pumps for cooling agents are used. The heat from the cooling tank is
transported down into the mountain. An assumption for passive cooling to work is that the cooling agent fluid is
colder than the cooling tank.
Active cooling means that a heat pump is activated to lower the temperature of the cooling agent, before it is transfer-
red into the cooling tank. If the cooling integral continues to rise, more heat pumps are started. The valve for active
cooling changes its mode and disconnects the drill hole. Therefore, the cooling agent only circulates through the
cooling tank and heat pump, so that all the produced cold can be collected.
Additionally, a dew point control function can be activated in the cooling module. This function is not necessary, but
if it is used a dew point sensor must be connected.
Surplus heat produced during active cooling can either be returned to the drill hole or cooled in a coolant cooler. If
a coolant cooler is used, a temperature sensor is connected for the cooler and the coolant module then controls the
cooling fans.
Required accessories
4 PT1000 contact strap-on temperature detector with 2 m of cable, item no. 086U3365 (item number corresponds to
1 detector)
One of the following modular cables:
Modular cable 0.3 m, item no. 086U4227
Modular cable 1.1 m, item no. 086U4228
Modular cable 10.0 m, item no. 086U4229
Connection block, item no. 086U5121
Dew point sensor for wall mounting, item no. 086U3396 (if the dew point function is used)
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System image
Transmitter, cooling tank
A strap-on temperature detector is connected on the cooling tank at about a third of the tank’s height.
Transmitter, cooling circuit
A strap-on temperature detector is connected on the supply line of the cooling circuit, after the circulation pump.
Transmitter, cooling tank outlet
A strap-on temperature detector is connected on the return line of the cooling tank.
Transmitter, coolant cooler
A strap-on temperature detector is connected on the return line from the coolant cooler, as close to the cooler as
possible.
Heat circuit
Cooling agent circuit
Cooling circuit
Cooling tank
DHP-R
Modular cable
Cooling fan
Sensor, coolant cooler
Sensor, cooling tank outlet
Sensor, cooling tank
Dew point sensor
Sensor, cooling circuit
Circulation pump
Coolant cooler
Circulation pump
cooling circuit
Pilot valve
cooling circuit
Reversing valve, cooling tank
Reversing valve
cooling agent return
Reversing valve
surplus heat
Cooling module
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Connecting
Note! The maximum load may not exceed 50 VA.
Cooling module
The cooling module is mounted in the electric cabinet on the intended rail. If there is no room, the module can be
installed in an external, enclosed cabinet and connected with a longer modular cable.
• Connect a modular cable between HP CRM Exp.out and HPC CM Exp.in
Cooling module connections:
Temperature input, T1: Sensor, cooling tank
Temperature input, T2: Sensor, coolant cooler
Temperature input, T3: Sensor, cooling tank outlet
Temperature input, T4: Sensor, cooling circuit
Analogue input 0-10 V, AI1: Signal from dew point sensor, room temperature 0 - 50°C
Analogue input 0-10 V, AI2: Signal from dew point sensor, relative humidity 0-100%
Analogue output 0-10 V, AO1: Signal to cooling circuit pilot valve
Analogue output 0-10 V, AO2: Signal to cooling fans
Exp.in Exp.out
GGNDG
0
Y
1
DO1
G0
G0
DO2
G0
DO3
G0
DO4
G0
DO5
G0
24VAC
T1
AO1
AI2
GND
T2
GND
T3
GND
T4
GND
AI1
GND
GND
GND
AO2
GND
HPC CM
24 VAC
0-10V
0-10V
M
24 VAC
M
24 VAC
24 VAC 24 VAC
24 VAC 2.1
24 VAC 2.2
24 VAC 2.1
24 VAC 2.2
GG
0
Y
1
GNDY
1
24 VAC 2.1
24 VAC 2.1
24 VAC 2.2
AO1
24 VAC 2.2
24 VAC 2.1
DO1,2,4
24 VAC 2.2
Pilot valve,
cooling circuit
Pilot valve,
alternative connection
of cooling circuit
Circ. pump,
coolant cooler
Reversing valve,
surplus heat
Reversing valve,
cooling agent return
cooling tank
Alternative connection with
constant voltage feed for
2-point 24 VAC reversing valve.
Circ. pump,
coolant circuit
Dew point sensor
Cooling fans
From Exp.out
Sensor, cooling tank
Sensor, surplus cooler
Sensor, cooling tank outlet
Sensor, cooling circuit
Room temperature
Relative air humidity
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Relay 24 VAC, DO1: Signal to reversing valve against cooling tank (passive cold)
Relay 24 VAC, DO2: Signal to reversing valve against cooling agent return (active cold)
Relay 24 VAC, DO3: Signal to coolant cooler circulation pump
Relay 24 VAC, DO4: Signal to reversing valve, surplus heat
Relay 24 VAC, DO5: Signal to cooling circuit circulation pump
Transmitter, cooling tank
• Connect to T1 and GND
Transmitter, coolant cooler
• Connect to T2 and GND
Transmitter, cooling tank outlet
• Connect to T3 and GND
Transmitter, cooling circuit
• Connect to T4 and GND
Dew point sensor
• Connect to 24 VAC 2.1 and 24 VAC 2.2
• Connect room temperature sensor to AI1 and GND
• Connect relative air humidity sensor to AI2 and GND
Pilot valve, cooling circuit
• Connect AO1 to the signal input of the pilot valve
• Connect GND to pilot valve GND
• Connect the pilot valve terminal G to 24 VAC 2.1
• Connect the pilot valve terminal G0 to 24 VAC 2.2
Cooling fans
• Connect AO2 to the signal input of the cooling fan
• Connect GND to the cooling fan GND
Voltage feed to DO output terminals
• Connect 24 VAC to 24 VAC 2.1
• Connect G0 to 24 VAC 2.2
Reversing valve, cooling tank
• Connect start relay to DO1 and G0
Reversing valve, cooling agent return
• Connect start relay to DO2 and G0
Circulation pump, coolant cooler
• Connect start relay to DO3 and G0
Reversing valve, surplus heat
• Connect start relay to DO4 and G0
Circulation pump, cooling circuit
• Connect start relay to DO5 and G0
Alternative connection of reversing valves:
When constant voltage feed to a reversal valve’s 2-point 24 VAC adjuster is required, establish direct connection to 24
VAC 2.1 and 24 VAC 2.2. A start relay is not necessary when using a 2-point 24 VAC actuator.
Connect the control signal to the corresponding digital output terminal, DO1, DO2 or DO4.
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