Honeywell
• 67
P
RODUCT
DATA
Table 23. Technical information on Relay board 1
Table 24. Technical information on Relay board 2
Relay
board 1
Relay board with two Type 8A/STST and one Type 8A/STDT relays.
5,5 mm isolation between channels.
External interface connector
See chapter 6.
Terminal
Signal
Technical information
21
Relay output 1
*
*
If 230VAC is used as control voltage from the output relays, the control
circuitry must be powered with a separate isolation transformer to limit
short circuit current and overvoltage spikes. This is to prevent welding on
the relay contacts. Refer to standard EN 60204-1, section 7.2.9
Switching capacity24VDC/8A
250VAC/8A
125VDC/0.4A
Min.switching load5V/10mA
22
23
24
Relay output 2*
Switching capacity24VDC/8A
250VAC/8A
125VDC/0.4A
Min.switching load5V/10mA
25
26
32
Relay output 3*
Switching capacity24VDC/8A
250VAC/8A
125VDC/0.4A
Min.switching load5V/10mA
33
Relay
board 2
Relay board with two Type 8A/STST and standard thermistor input.
5,5 mm isolation between channels.
External interface connector
See chapter 6.
Terminal
Signal
Technical information
21
Relay output 1
*
*
If 230VAC is used as control voltage from the output relays, the control
circuitry must be powered with a separate isolation transformer to limit
short circuit current and ovrvoltage spikes. This is to prevent welding on
the relay contacts. Refer to standard EN 60204-1, section 7.2.9
Switching capacity24VDC/8A
250VAC/8A
125VDC/0.4A
Min.switching load5V/10mA
22
23
24
Relay output 2*
Switching capacity24VDC/8A
250VAC/8A
125VDC/0.4A
Min.switching load5V/10mA
25
26
28
Thermistor input Rtrip = 4.7 k
(PTC); Measuring voltage 3.5V
29
Summary of Contents for SmartVFD HVAC MR4
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Page 49: ...Honeywell 47 COMMISSIONING ...
Page 78: ...STARTUP Honeywell 6 ...