Connectors 1. Power connector (AC) IEC 60320 C14 or equivalent 4. Alarm output connector (ALARM) D-sub 9 pin (pin) Holding screw: M2.6 2. Communication connector (RS-232C or RS-485) D-sub 9 pin (socket) Holding screw: M2.6 3. External sensor connector (EXT.SENSOR) D-sub 15 pin (socket) Holding screw: M2.6 Pin No. Contents 1 2 3 100 to 240 VAC 100 to 240 VAC PE Pin No. Signal contents 1 2 3 4-5 6 7 8 9 Contact a for output cut-off alarm (open when alarm occurs) Common for output cut-off alarm Contact b for output cut-off alarm (closed when alarm occurs) Unused Contact a for upper/lower temp. limit alarm (open when alarm occurs) Common for upper/lower temp. limit alarm Contact b for upper/lower temp. limit alarm (closed when alarm occurs) Unused Pin No. Signal contents 1-2 3 4 5 6-14 15 Unused Terminal A of resistance temperature detector Terminal B of resistance temperature detector Terminal B of resistance temperature detector Unused FG Pin No. RS-232C Signal contents 1 2 3 4 5 6-9 Unused RD SD Unused SG Unused RS-485 BUS+ BUS. Unused Unused SG Unused 5 4 3 15 14 13 12 11 10 9 8 7 6 2 1 3 5 4 6 7 8 9 1 2 3 4 5 9 8 7 6 5 4 3 2 1 3 1 2 Peltier-Type Chiller Thermo-con (Air-cooled) Series HEC-A 1391 HRG HRS HRZ HRZD HRW HEC HEB HED HEA IDH