7
1.1.6 Control Outputs
All models of the ST-15C provide volt free, normally open contact for controlling the loading rack (gantry)
valve or pump. The contact is rated at 250VAC at 5 Amps. resistive. The contact is protected by a 5A-fuse
(F2) in the controller. If the controlled circuits exceed these ratings, external power relays or motor starters
must be used.
1.1.7 User Replaceable Fuses
The ST-15C contains two user replaceable fuses; a 1-Ampere main fuse (F1) and a 5-Ampere control fuse
(F2) (see Replacement Parts Sheets in Appendix 4.0).
1.2 Technical Specifications
Temperature Range: -20° to +60°C (-40° to +140°F)
Power Requirements:
120VAC Models:
240VAC Models:
100 – 130 VAC, 50/60 Hz, 20VA Max.*
200 – 250 VAC, 50/60 Hz, 20VA Max.*
*20VA does not include circuits controlled by the output relay contact
Sensors:
One of the following sensors:
SP-BLUK Series Thermistor Sensor (-40°C to +48°C)
SP-BLHK Series Thermistor Sensor (-28°C to +93°C)
SP-TO, SP-IO or SP-IR Series 2-Wire Optic Sensor (-40°C to +60°C)
Output Relay: One normally open volt-free contact rated 250VAC, 5A resistive max. The
output contact closes when sensor is dry and functional.
Response Time: PERMISSIVE: Output goes permissive in 6 to 30 seconds (typical) of
connection to a thermistor sensor (warm-up time of thermistor). Output goes
permissive instantaneously when connected to an optic sensor
NON-PERMISSIVE (shutdown): 0.5 second maximum
Indicator Lights: Output status indicator lights:
Red: Non-permissive
Green: Permissive
Output Control Fuse: Internal 5 Ampere
Connections: Provided by internal terminal strips.
Enclosure: Explosion-proof, weatherproof IP65
Dimensions: See Appendix 4.0 for outline drawing
Weight: 12.7 Kg (28 Lbs.)
Approvals:
Baseefa02ATEX0048 EEx dem IIB T5 (-20°C ≤ T
a
≤ +60°C)
or: EEx dem IIB T6
The enclosure contains associated electrical apparatus
Baseefa02ATEX0169U [EEx ia] IIB (-40°C T
a
+70°C)
Degree of protection of enclosure IP65. The rating of the enclosure is negated if the holes in the enclosure
are unplugged/unscrewed or any holes are drilled into the enclosure. Cover screws to be minimum grade
A2-70 stainless steel.
The ST-15C control unit has been designed to be impact-resistant. Do not subject to excessive mechanical
or thermal stresses. Do not allow the unit to come in contact with aggressive substances.
The ST-15C may only be repaired by replacing the internal control module. The internal control module is
non-repairable.
Do not open when an explosive gas atmosphere is present.
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General