hussman SCSS-SL manual Controller application setting parameters

Rev. 0108

Controller application setting parameters

	Para-		Controller			Min.	Max.	Factory	Actual
Setting and read-off parameters	meter		application no.
						value	value	setting	setting
	codes	1	2	3	4
Temperature controller, Temperature						-60oC	50oC	3oC
Thermostat
Differential1)	r01					0.1 K	20 K	2 K
Max. limitation of set temperature	r02					-59oC	50oC	50oC
Min. limitation of set temperature	r03					-60oC	49oC	-60oC
Adjustment of temperature indication	r04					-20 K	20 K	0.0 K
Temperature unit (°C/°F)	r05							oC
Alarm
Upper deviation (above temp. setting + differential 2)	A01					0 K	50 K	5 K
Lower deviation (below temp. setting 2)	A02					0 K	50 K	5 K
Temperature alarm delay	A03					0 min	90 min	30 min
Door alarm delay	A04					0 min	60 min	30 min
Compressor
Min. ON-time	c01					0 min	15 min	0 min
Min. OFF-time	c02					0 min	15 min	0 min
Cut-in frequency on sensor fault 3)	c03					0 %	100 %	0 %
Defrost
Defrost method (EL/GAS)	d01							EL
Defrost stop temperature	d02					0oC	25oC	6oC
Interval between defrost starts	d03					OFF	48 hour	8 hour
Max. defrost duration	d04					0 min	180 min	45 min
Time staggening on defrost cut-ins at start-up	d05					0 min	60 min	0 min
Drip-off time	d06					0 min	20 min	0 min
Fan start delay after defrost	d07					0 min	20 min	0 min
Fan start temperature	d08					-15oC	0oC	-5oC
Fan cut-in during defrost (yes/no)	d09							yes
Defrost sensor (yes/no)	d10							yes
Temperature alarm delay after defrost	d11					0 min	199 min	90 min
Fan
Fan stop on compressor cut-out (yes/no)	F01							no
Fan stop delay	F02					0 min	15 min	0 min
Miscellaneous
Delay of output signal cancellation after start-up	o01					2 s	120 s	2 s
Digital input signals 4)	o02							0
(0 = not used, 1 = door alarm, 2 = defrost, 3 = bus)
Real time clock (if fitted)
Six start times for defrost	t01→ t06					0	23	OFF
All can be cut out by setting on OFF
Hour setting	t07					0 hour	23 hour	0 hour
Minute setting	t08					0 min	59 min	0 min

Fault code display		Alarm code display
Fault in controller	E 1	High temperature alarm
Disconnected room sensor	E 2	Low temperature alarm
Short-circuited room sensor	E 3	Door alarm
Disconnected defrost sensor	E 4	Status code display
Short-circuited defrost sensor	E 5	ON-time
		OFF-time
		Drip-off time

A1 A 2 A 4

S2 S 3 S 4

1) The compressor relay closes when the room temperature exceeds the setting value and differential.

2) Alarm is released and sensor failure is indicated, if the room temperature reaches 5°C or more outside the setting range

–60°to +50°C.

3)The frequency is measured after approx. three days and nights operation after start of the plant (72 cyclings)

otherwise:

ON-time = c03 ⋅ 20: 100 minutes

OFF-time interval 20 minus ON-time per minute

4) Function possibilities with SPDT contact, connected to the terminals 3 and 4 are the following:

Door alarm: If SPST is cut out, alarm signalling starts and the fan is stopped, cf. A04 or F02.

Defrost: If SPST is cut in, defrost starts. (However, if d03 is not OFF, defrost will during contact break down start with the programmed time intervalles).

Bus: With installed communication card, the position of the SPST contacts will be registered in the BUS system.

11